MEMORANDUM OF DECISION
YOUNG, United States District JudgeI. INTRODUCTION
On February 25, 2016, this Court granted Rigoberto Ramirez’s (“Ramirez”) motion to vacate his sentence under 28 U.S.C. § 2255, mandating his immediate release from custody. Elec. Clerk’s Notes, ECF No. 137. This memorandum explains the Court’s reasoning in doing so.
A. Ramirez’s Sentencing and Direct Appeal
In 2011, Ramirez pled guilty to several drug-related charges. Elec. Clerk’s Notes, ECF No. 41; see United States v. Ramirez, 708 F.3d 295, 298 (2013) (“Ramirez I”). Based on the algorithm established by the United States Sentencing Commission Guidelines (“Guidelines”), the U.S. Probation Office’s pre-sentence report (“PSR”) initially determined that Ramirez’s offense *293level was 15 and that his criminal history points placed him in Criminal History Category V, resulting' in a Guidelines sentencing range of 37 to 46 months. Ramirez Pre-sentence Report (“PSR”) 12, 29; Ramirez I, 708 F.3d at 298. The U.S. Probation Office also determined that two of Ramirez’s prior convictions qualified as “crime[s] of violence” under Guidelines Section 4B1.2(a), making Ramirez a “career offender” subject to a sentence enhancement under Section 4B1.1 of the Guidelines. PSR 12; Ramirez I, 708 F.3d at 299. This designation necessarily bumped him up to Criminal History Category VI. The PSR calculated Ramirez’s career-offender total offense level to be 31, which, together with his Criminal History Category VI, led to a Guidelines range of 188 to 235 months. PSR 12, 29, 44; U.S.S.G. § 4B 1.2(a). The Court adopted the PSR’s Guidelines calculations and sentenced Ramirez to 156 months (13 years) in prison. Tr. Disposition Rigoberto Ramirez 9:6-8, ECF No. 78; Elec. Clerk’s Notes, ECF No. 71.
Ramirez appealed his sentence, arguing that one of his prior convictions did not qualify as a “crime of violence” under Section 4B1.2(a).1 Ramirez I, 708 F.3d at 300. The First Circuit concluded that this Court had not erred in applying the career-offender enhancement, and that Ramirez qualified as career offender solely under the career-offender “residual clause” in Section 4B1.2(a)(2) of the Guidelines (the “Guidelines’ Residual Clause”). Id. at 307. The First Circuit, however, remanded the case for resentencing on the basis that the record was unclear with respect to this Court’s imposition of an unrelated sentence enhancement. Id at 310.
At Ramirez’s resentencing on April 29, 2013, the Court determined Ramirez’s career offender total offense level to be 29, which, Coupled with his unchanged Criminal History Category VI, resulted in a Guidelines range of 151 to 188 months. Order. Am. J. (“Order”) 1, 7, ECF No. 102. The Court amended the prior judgment and resentenced Ramirez to 12 years (144 months), which was below the career-offender-enhanced Guidelines range. Id. at 9. Ramirez appealed the amended judgment, first to the First Circuit, which affirmed the Court’s resentencing,2 United States v. Ramirez, No. 13-1585, slip op. (1st Cir. June 23, 2014) (“Ramirez II”), ECF No. Ill, and then, to the Supreme Court, Letter Supreme Court United States Clerk, ECF No. 113. The Supreme Court denied certiorari on October 20, 2014. Ramirez v. United States, — U.S. -, 135 S.Ct. 424, 190 L.Ed.2d 307 (2014).
B. Developments After the Supreme Court Denied Certiorari
The year after the Supreme Court denied Ramirez certiorari, it decided Johnson v. United States, — U.S. -, 135 S.Ct. 2551, 192 L.Ed.2d 569 (2015). In Johnson, the named defendant had been sentenced under the Armed Career Criminal Act (“ACCA”), 18 U.S.C. § 924(e), which imposes sentencing enhancements on individuals convicted under 18 U.S.C. § 922(g) (felon in possession of a firearm). See id. at 2556. If an individual convicted under Section 922(g) has three or more prior convic*294tions for a “serious drug offense” or a “violent felony,” the ACCA increases his sentencing range from a maximum of 10 years in prison, to a minimum of 15 years in prison. 18 U.S.C. § 924(e)(1); Johnson, 135 S.Ct. at 2555. The ACCA defines “violent felony” as “any crime punishable by imprisonment for a term exceeding one year” that “(i) has as an element the use, attempted use, or threatened use of physical force against the person of another; or (ii) is burglary, arson, or extortion, involves use of explosives, or otherwise involves conduct that presents a serious potential risk of physical injury to another[.]” 18 U.S.C. § 924(e)(2)(B) (emphasis added). The underlined text is known as the “residual clause” of the ACCA, Johnson, 135 S.Ct. at 2556, and is expressed in haec verba as the Guidelines’ career-offender residual clause. Ramirez I, 708 F.3d at 306; U.S.S.G. § 4B1.2(a)(2).
In Johnson, the Supreme Court concluded that the inquiry required to establish whether a certain offense fell under the ACCA’s residual clause “denie[d] fair notice to defendants and invite[dj arbitrary enforcement by judges.” 135 S.Ct. at 2557. Prior judicial attempts that failed to craft a “principled and objective standard out of the residual clause” convinced the Supreme Court that “imposing an increased sentence under the residual clause of the [ACCA] violate[d] the Constitution’s guarantee of due process.” Id. at 2558, 2563.
C. Ramirez’s Section 2255 Petition
Following Johnson, on August 24, 2015, Ramirez filed the current motion to vacate his sentence under 28 U.S.C. § 2255, arguing that the Supreme Court’s invalidation of the ACCA residual clause requires the conclusion that the Guidelines’ identically worded residual clause also violates due process, and that this conclusion ought retroactively apply to Ramirez’s collateral attack on his sentencing. Mot. Vacate, ECF No. 119; Addendum Supp. 28 U.S.C. § 2255 Mot. 2, ECF No. 120; Def.’s Reply Mem. Law Supp. Mot. § 2255 Vacate, Set Aside, Correct Sentence Person Federal Custody (“Def.’s Mem.”) 3, ECF No. 134.
The government opposed Ramirez’s petition. Gov’t’s Supplemental Opp’n Def.’s Mot. Relief 28 U.S.C. § 2255 (“Gov’t’s Opp’n”) 2-4, ECF No. 131. In its memorandum, the government conceded that Johnson applies retroactively to cases involving the ACCA, id. at 2, and that, under Johnson, the Guidelines’ Residual Clause is invalid, id. at 3. It argued, nevertheless, that “the application of Johnson to the Sentencing Guidelines’ residual clause produces procedural changes in the sentencing process that are not retroactive on collateral review.” Id.
In the time since the parties filed their briefs and the Court granted Ramirez’s motion at the February 25, 2016, hearing, the Supreme Court confirmed the retroac-tivity of Johnson as applied to the ACCA in Welch v. United States, — U.S. -, 136 S.Ct. 1257, 194 L.Ed.2d 387 (2016). The retroactive application of Johnson to the Guidelines’ Residual Clause, however, has not yet been addressed by the Supreme Court or any of the Courts of Appeal.
II. ANALYSIS
This case presents the question whether the Supreme Court’s decision in Johnson ought apply retroactively to invalidate the Guidelines’ Residual Clause on collateral review of Ramirez’s sentence under 28 U.S.C. § 2255.3 Accordingly, the Court first analyzes the merits of Ramirez’s con*295stitutional claim — the due process vaguer ness challenge to the Guidelines’ Residual Clause — although the parties agree that the Guidelines’ Residual Clause is unconstitutionally vague. The Court then proceeds to conduct the retroactivity analysis for Johnson, as applied to the Guidelines, under the relevant framework for determining retroactivity provided by the plurality opinion in Teague v. Lane, 489 U.S. 288, 109 S.Ct. 1060, 108 L.Ed.2d 834 (1989). See Ferrara v. United States, 456 F.3d 278, 288 (1st Cir.2006).4
A. Due Process
Although the government conceded that the Guidelines’ Residual Clause is void for vagueness, the Court briefly addresses the merits of this argument — on which neither the First Circuit nor the Supreme-Court has yet spoken — for the purpose of “candidly explaining]” its reasoning.5 Robert E. Keeton, Keeton on Judging in the American legal System 5 (1999).
Under the Guidelines, an offender is subject to an increased sentencing range if classified as a “career offender” as a result of having “at least two prior felony convictions of either a crime of violence or a controlled substance offense.” U.S.S.G. § 4B1.1. The Guidelines define “crime of violence” as an offense that “(1) has as an element the use, attempted usé, or threatened use of physical force against the person of another, or (2) is burglary of a dwelling, arson, or extortion, involves use of explosives, or otherwise involves conduct that presents a serious potential risk of physical injury to another.” Id. § 4B1.2(a)(l)-(2) (emphasis added). The underlined text is the Guidelines’ Residual Clause.
In Johnson, the Supreme Court held that the identically worded residual clause of the ACCA was void for vagueness because it was “so vague it fail[ed] to give ordinary people fair notice of the conduct it punishe[d], or so standardless that it invite[d] arbitrary enforcement.” Johnson, 135 S.Ct. at 2556. The Court observed that “the experience of the federal courts leaves no doubt about the unavoidable uncertainty and arbitrariness of adjudication under the residual clause[,]” id. at 2562, and referenced cases interpreting both the ACCA residual clause and the Guidelines’ Residual Clause, id. at 2557, 2560 (collecting cases). In the First Circuit, the two residual clauses have also been analyzed in tandem in the past. See Ramirez I, 708 F.3d at 306; United States v. Grupee, 682 F.3d 143, 148-49 (1st Cir.2012); United States v. Giggey, 551 F.3d 27, 39 (1st Cir.2008).
*296The Guidelines’ advisory nature6 does not render the Supreme Court’s conclusion inapplicable to the residual clause contained therein. Cf. Peugh v. United States, — U.S. -, 133 S.Ct. 2072, 2084, 186 L.Ed.2d84 (2013) (holding that the Guidelines are subject to the Ex Post Fac-to clause). The Guidelines “remain the starting' point for a district court’s decision,”7 Giggey, 551 F.3d at 29, and district courts are to justify major departures, see Peugh, 133 S.Ct. at 2080; United States v. Ortiz-Rodriguez, 789 F.3d 15, 19 (1st Cir.2015).8
Moreover, whether or not the eventual sentence falls within or outside the Guidelines range, the classification as career offender has a meaningful impact on the offender’s ultimate sentence. See Federal Defender’s Office, Average Sentences of Drug Trafficking Offenders (Career Offender and Non-career Offender) FY 2005-2014, https://www.fd.org/docs/select-topies/ sentencing-resources/average-sentences-of-drug-offenders-and-robbery-offenders-(career-offender-and-non-career-offender) — fy-2005-2014.pdf?sfvrsn=4 (last visited May 19, 2016). Data show that the difference between the average' sentences for career offenders versus non-career offenders is around 100 months. See id.
Although the Guidelines’ advisory nature means that a criminal defendant has no “expectation subject to due process protection ... that [he will] receive a sentence within the presumptively applicable Guidelines range[,]” Irizarry v. United States, 553 U.S. 708, 713, 128 S.Ct. 2198, 171 L.Ed.2d 28 (2008), the Guidelines’ continued role as “basis,” Peugh, 133 S.Ct. at 2083, for a- defendant’s ultimate sentence preserves his due process expectation that his sentence-enhancing classification as a *297career offender will not be subject to the “unavoidable uncertainty and arbitrariness of adjudication under the residual clause,” Johnson, 135 S.Ct. at 2562. Indeed, the invocation of “so shapeless a provision” as the residual clause to sentence a defendant to a significantly higher sentence, id. at 2560, violates due process.9
B. Teague Analysis
According to Teague, “new constitutional rules of criminal procedure, [are not] applicable to those cases which have become final before the new rules [were] announced.” 489 U.S. at 310, 109 S.Ct. 1060. “[Sjubstantive rules,” however, are not subject to- the Teague retroactivity bar.10 See id. at 307, 109 S.Ct. 1060; Schriro v. Summerlin, 542 U.S. 348, 351, 124 S.Ct. 2519, 159 L.Ed.2d 442 (2004).
This section first discusses whether the rule at issue here — he., the invalidation of the Guidelines’ Residual Clause pursuant to Johnson — constitutes a “new” rule, for the purpose of Teague. Upon concluding that it is a new rule, the Court then turns to the question of whether it qualifies as a “substantive rule” applicable retroactively in this case.
1. New Rule
A case announces a new rule “when it breaks new ground or imposes a new obligation^]” or, in other words, “if the result was not dictated by precedent existing at the time the defendant’s conviction became final.”11 Teague, 489 U.S. at *298301, 109 S.Ct. 1060; see also Chaidez v. United States, — U.S. -, 133 S.Ct. 1103, 1107, 186 L.Ed.2d 149 (2013) (a holding is not dictated by existing precedent “unless it would have been apparent to all reasonable jurists”) (internal citation and quotation marks omitted). Overruling existing precedent is sufficient to render a rule new, see Saffle v. Parks, 494 U.S. 484, 488, 110 S.Ct. 1257, 108 L.Ed.2d 416 (1990), though not necessary, see Stringer v. Black, 603 U.S. 222, 228, 112 S.Ct. 1130, 117 L.Ed.2d 367 (“[Granting the relief sought would create a new rule [where] the prior decision is applied in a novel setting, thereby extending the precedent”).
Niether party disputes that holding the Guidelines’ Residual Clause unconstitutionally vague would announce a “new rule,” though they differ in their framing of this issue. Compare Gov’t’s Opp’n 4 (“in order to grant collateral relief in a guidelines case based on Johnson, the Court would have to announce or apply two new rules that were not established before Johnson: that the guidelines’ residual clause is unconstitutionally vague, and that due process vagueness principles apply to the sentencing guidelines.”), with Def.’s Mem. 8-9 (arguing that the new rule announced in Johnson is the only rule the Court would have to apply to invalidate the Guidelines’ Residual Clause as unconstitutionally vague).
In the Court’s view, each party’s approach is flawed. The ultimate question here is whether the Court could give Ramirez and all other similarly situated defendants the benefit of the rule that the Guidelines residual clause is unconstitutionally vague. Splitting the rule in two, as the government urges, would create a procedural quagmire that would not serve the purpose of the Teague retroactivity framework.12 At the same time, categorically *299applying the Johnson rule to the Guidelines, as Ramirez urges, would .not fairly account for the more involved analysis necessary to support the retroactivity of the Guidelines’ Residual Clause vagueness rule, which is not a perfunctory application of Johnson.13
In reality, the “new rule” question can be rather simply resolved. Application of Johnson to the Guidelines’ Residual Clause constitutes a new rule, Johnson itself — -which was decided after Ramirez’s conviction became final — overruled prior Supreme Court decisions, 135 S.Ct. at 2563, and thus announced a new rule, see Welch, 136 S.Ct. at 1265. To hold that the Guidelines’ Residual Clause is void for vagueness on the basis of Johnson, then, would be to announce a new constitutional rule and not merely to apply the “constitutional standards that prevailed” at the time Ramirez’s conviction became final. Teague, 489 U.S. at 306, 109 S.Ct. 1060. The new rule at issue, then — consistent with the above analysis and the Court’s rejection of each party’s more extreme approach — is the application of Johnson’s vagueness holding to invalidate the Guidelines’ Residual Clause.
2. Retroactivity
Having defined the new rule at issue, the Court must decide whether it applies to Ramirez. To do so, it must determine if it is retroactive under Teague.
Teague’s retroactivity framework “is founded on the notion that one of the ‘principal functions of habeas corpus [is] to assure that no man has been incarcerated under a procedure which creates an imper-missibly large risk that the innocent will be convicted.’ ” Bousley v. United States, 523 U.S. 614, 620, 118 S.Ct. 1604, 140 L.Ed.2d 828 (1998) (quoting Teague, 489 U.S. at 312, 109 S.Ct. 1060) (additional internal citation and quotation marks omitted). Through Teague and its progeny, the Supreme Court sketched the boundary separating rules that must apply retroactively in order to avoid such an “impermis-sibly large risk,” from those rules that need not have retroactive application to ensure that habeas corpus serves its main purpose. “Substantive rules” comprise the *300former category, while “procedural rules” fall into the latter.14
Procedural rules are those “designed to enhance the accuracy of a conviction or sentence by regulating ‘the manner of determining the defendant’s culpability.’ ” Montgomery v. Louisiana, — U.S. -, 136 S.Ct 718, 730, 193 L.Ed.2d 599 (quoting Schriro, 542 U.S. at 353, 124 S.Ct. 2519; Teague, 489 U.S. at 313, 109 S.Ct. 1060). Such rules may, for example, “ ‘allocate decisionmaking' authority’ between judge’ and jury ... or regulate the evidence that the court could consider in making its decision.” Welch, 136 S.Ct. at 1265 (quoting Schriro, 542 U.S. at 353, 124 S.Ct. 2519). Again, these rules do not apply retroactively. Bousley, 523 U.S. at 620, 118 S.Ct. 1604.
Substantive rules, on the other hand, “set forth categorical constitutional guarantees that place certain criminal laws and punishments beyond the State’s power to impose.” Montgomery, 136 S.Ct. at 729. They include, for example, “rules forbidding criminal punishment of certain primary conduct” and “rules prohibiting a certain category of punishment for a class of defendants because of their status or offense.” Penry v. Lynaugh, 492 U.S. 302, 330, 109 S.Ct. 2934, 106 L.Ed.2d 256 (1989), abrogated on other grounds by Atkins v. Virginia, 536 U.S. 304, 122 S.Ct. 2242, 153 L.Ed.2d 335 (2002). These rules apply retroactively “because they necessarily carry a significant risk that a defendant stands convicted of an act that the law does not make criminal or faces a punishment that the law cannot impose upon him.” Schriro, 542 U.S. at 352, 124 S.Ct. 2519 (internal quotation marks and citation omitted).
The government argues that while Johnson announced a substantive rule, the application of that rule to the Guidelines’ Residual Clause is procedural, and thus non-retroactive, as it merely alters the range of appropriate sentences under the advisory Guidelines and does not render Ramirez’s sentence unlawful.15 See Def.’s *301Opp’n 12-19. Ramirez, meanwhile, argues that Johnson is “categorically retroactive,” Def.’s Mem. 6 (quoting Stork v. United States, No 15-2687, slip op. at 1 (7th Cir. Aug. 13, 2015)) — that is, because Johnson is retroactive as applied to the ACCA Residual Clause, it is also retroactive as applied to the Guidelines’ Residual Clause, see id. at 3-8.
As discussed supra, the Court rejects Ramirez’s categorical approach to defining the rule at issue here. In other words, the rule with which the Court deals here is not Johnson itself, but rather Johnson as applied to the Guidelines’ Residual Clause. Accordingly, that Johnson was held to be substantive, and thus retroactive, see Welch, 136 S.Ct. at 1265, does not resolve the inquiry; in order for Ramirez to benefit from retroactivity here, the invalidation of the Guidelines’ Residual Clause, pursuant to Johnson, must be substantive. The Court holds that it is.16
Under the Guidelines, the basis for a defendant’s sentencing range is provided by two variables: the offense level and the criminal history category. United States v. Serrano-Mercado, 784 F.3d 838, 839. The criminal history category ranges from Category I to Category VI; the higher the category, the higher the sentence. Id. A career offender is assigned Category VI, the highest possible range, id. in keeping with Congress’s mandate to the United States Sentencing Commission that “the [Guidelines specify a sentence to a term of imprisonment at or near the maximum term authorized” for career offenders. 28 U.S.C. § 994(h). A career offender designation may also increase an offender’s offense level. U.S.S.G. § 4B1.1(b). The offense level and the criminal history category provide an initial suggested sentencing range. Serrano-Mercado, 784 F.3d at 839.
Before embarking on the “advisory” component of sentencing under the Guidelines — the consideration of the 18 U.S.C. § 3553(a) factors (the majority of which are related to the primary offense and not the offender’s criminal history) and other variations — the judge already views the defendant through “career offender-tinted glasses” with a baseline sentencing range “multitudes” higher than otherwise. Hawkins v. United States, 706 F.3d 820, 827 (7th Cir.) (Rowan J., dissenting), opinion supplemented on denial of reh’g, 724 F.3d 915 (7th Cir.2013). Moreover, empirical *302data shows that even after a judge exercises her discretion to deviate from the initially suggested sentencing range, the differential between the sentences with and the sentences without the career-offender designation persists, as a result of the Guidelines’ continuing “gravitational pull,” Hawkins, 706 F.3d at 824, resulting from procedural hurdles that “make the imposition of a non-Guidelines sentence less likely[,]” Peugh, 133 S.Ct. at 2083-84; see supra Section II.A. Year after year following Booker, the vast majority of sentences imposed by federal district courts fell within or below the Guidelines. See U.S.S.C., Sourcebook of Federal Sentencing Statistics FY 2007 to FY 2014, Table N (approximately fifty percent of sentences are within the Guidelines). In fact, only two percent or fewer of the sentences imposed constituted upward departures in every year since Booker.17 Id. The numbers are fairly consistent among circuits. Id. Table N-1 to N-11.
The numbers confirm that, in practice, the upper limit of a Guidelines range acts as a ceiling for the vast majority of sentences imposed by federal district court judges, making a career-offender designation the equivalent of an increase in a statutory maximum.18 See United States v. Gurley, 860 F.Supp.2d 95, 116 (D.Mass. 2012) (this Court sentenced the defendant to the high end of the applicable Guidelines range); see also United States v. Kandirakis, 441 F.Supp.2d 282, 335-336 (D.Mass.2006) (sentence within thé Guidelines range).19 Although judges may depart downward more substantially when sentencing career offenders, see Spencer v. United States, 773 F.3d 1132, 1142 (11th Cir.2014) (en banc), the differential be*303tween the unenhanced sentence and the enhanced one remains significant, at an annual average of 100 months even after accounting for all the “advisory” steps that influence the ultimate sentence.20 See supra Section II.A. In this case, in the absence of the career-offender designation, Ramirez’s sentencing would have been based on a sentencing range of 37 to 46 months. See supra Section I.A. With the career-offender designation, that jumps to a range of 151 to 188 months. Id.
That some — realistically, few — offenders would receive the same sentence, with or without the career offender classification, does not undermine the substantive character of the rule at issue here. Cf. Montgomery, 136 S.Ct. at 734 (holding that Miller v. Alabama, — U.S. -, 132 S.Ct. 2455, 183 L.Ed.2d 407 (2012), announced a substantive rule). In Miller, the Supreme Court held that juveniles convicted of homicide could not be sentenced to life in prison without parole absent consideration of the juvenile’s special circumstances. 132 S.Ct. at 2469. Several years later, in Montgomery, the Supreme Court held that the Miller rule was retroactive even though the rule did not categorically bar life without parole for juveniles, because it “carr[ies] a significant risk that ... the vast majority of juvenile offenders ... face[] a punishment that the law cannot impose on [them].” 136 S.Ct. at 734 (citation omitted). According to the Supreme Court, it sufficed that Miller “bar[red] life without parole ... for all but the rarest of juvenile offenders.” Id.21 Similarly, here, an offender designated as career offender under- the Guidelines’ Residual Clause would be subject to a sentence multiple times higher than in the absence of the designation in the vast majority of cases.22
*304Given the impact of a career offender designation on a defendant’s sentence, if a court were to refuse retroactively to apply the invalidation of the Guidelines’ Residual Clause, the risk that a defendant received a sentence that otherwise he would not have received is more than “likely to rise,” Conrad v. United States, 815 F.3d 324, 327 (7th Cir.2016). Rather, the court’s decision would carry the “impermissibly large risk,” Teague, 489 U.S. at 312, 109 S.Ct. 1060, that the punishment exceeds what the defendant would have received without the designation. This risk trumps finality in the Teague framework.23 See Teague, 489 U.S. at 307-308, 312, 109 S.Ct. 1060. Accordingly, the invalidation of the Guidelines’ Residual Clause pursuant to Johnson constitutes a substantive rule that must apply retroactively.24
III. CONCLUSION
It follows from the foregoing analysis that the rule announced in this case — that the- Guidelines’ Residual Clause is unconstitutionally vague and is retroactively applicable to 'Ramirez, entitles him to the relief provided by Section 2255. According*305ly,-the Court granted Ramirez’s Section 2255 petition to vacate, set aside, or correct his sentence. Elec. Clerk’s Notes, ECFNo. 137.
. Ramirez also argued at his sentencing hearing that the Guidelines’ "residual clause" was void for vagueness; the First Circuit deemed Ramirez to have all “but abandon[ed]” this argument on appeal. Ramirez I at 299, 307 n. 13.
. On appeal, Ramirez reasserted two main arguments in order to preserve them for a Supreme Court appeal: that one of his prior convictions did not qualify as "crime of violence” under Section 4B1.2(a), and that the career-offender "residual clause,” Section 4B 1.2(a)(2) of the Guidelines, was unconstitutionally vague. Ramirez II at 1.
. Neither party disputes that Ramirez's petition meets the 28 U.S.C. § 2255 jurisdictional requirements.
. The Court acknowledges that it has held in the past that Teague does not apply to Section 2255 petitions seeking review of enhanced sentences. United States v. Payne, 894 F.Supp. 534, 542 (D.Mass.1995). Since then, although Teague only analyzed the federal collateral attack upon a state conviction, the First Circuit has stated, without discussion, that the Teague retroactivity framework constrains a federal prisoner’s rights under Section 2255. Ferrara, 456 F.3d at 288. In Welch, the Supreme Court also conducted the Teague analysis for Johnson under the assumption, embraced by the parties in that case, that Teague applied. Welch, 136 S.Ct. at 1264. In light of existing precedent, the Court will thus proceed under the same assumption, unchallenged by either party, that Teague applies in this case.
. The Court also takes this more prudent approach in light of the government’s penalty-free decision unilaterally to .rescind concessions made in previous cases. See Gov’t’s Opp’n 19 n. 4 (stating that it no longer concedes that the ACCA-related rules announced in Begay v. United States, 553 U.S, 137, 128 S.Ct. 1581, 170 L.Ed.2d 490 (2008) and Chambers v. United States, 555 U.S. 122, 129 S.Ct. 687, 172 L.Ed.2d 484 (2009) were also retroactive as applied to the Guidelines, and citing United States v, Ogles, 440 F.3d 1095, 1099 (9th Cir.2006) (en banc) for the proposition that it is entitled to rescind previous concessions of law).
. The Guidelines became advisory in 2005 when the Supreme Court held that the then-mandatory Guidelines violated the Sixth Amendment because they permitted judges to impose sentences above "the maximum authorized by the facts established by a plea of guilt or a jury verdict.” United States v. Booker, 543 U.S. 220, 244, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). To remedy this violation, the Supreme Court struck certain portions that made the Guidelines mandatory. Id. at 245-258, 125 S.Ct. 738. After Booker, a district court is no longer bound by the Guidelines sentencing range but has to consider all the factors enumerated in 18 U.S.C. § 3553(a) “to guide its discretion at sentencing.” Peugh, 133 S.Ct. at 2080.
. Before deciding on a sentence, a district court judge receives input from both parties as well as a pre-sentencing report from a probation officer. United States v. Serrano-Mercado, 784 F.3d 838, 839 (1st Cir.2015). The judge must also consider the factors set forth in 18 U.S.C. § 3553 (a), Peugh, 133 S.Ct. at 2080, and may consider deviations from the Guidelines that are not derived from Section 3553 and that contravene “broad policy pronouncements] of the Sentencing Commission,” United States v. Martin, 520 F.3d 87, 96 (1st Cir.2008). A district court "may not presume that the Guidelines range is reasonable,” Peugh, 133 S.Ct. at 2080 (quoting Gall v. United States, 552 U.S. 38, 50, 128 S.Ct. 586, 169 L.Ed.2d 445 (2007)), and must explain on the record the basis for a "chosen sentence,” id.
. The appellate process also cabins a judge’s discretion vis-a-vis the Guidelines. A district court’s sentencing decision is reviewed for unreasonableness under an abuse of discretion standard. Gall, 552 U.S. at 51, 128 S.Ct. 586; United States v. Quinones-Melendez, 791 F.3d 201, 204 (1st Cir.2015), An appellate court “may, but is not required to presume that a within-Guidelines sentence is reasonable” and "may not apply a heightened standard of review or a presumption of unreasonableness to sentences outside the Guidelines range[.]” Peugh, 133 S.Ct. at 2080. " '[A] district court’s decision to vary from the advisory Guidelines may attract the greatest respect when’ it is based on the particular facts of a case.” Id. (quoting Kimbrough v. U.S., 552 U.S. 85, 109, 128 S.Ct. 558, 169 L.Ed.2d 481 (2007)).
. The Court is not alone in concluding that the Guidelines’ Residual Clause is unconstitutionally vague. Since Johnson, with one exception, the Circuit courts that have reached the issue have concluded that the Guidelines' Residual Clause is unconstitutional. See United States v. Welch, No. 12-4402-CR L, 641 Fed.Appx. 37, 42-43, 2016 WL 536656, at *4 (2d Cir. Feb. 11, 2016); United States v. Townsend, No. 14-3652, 638 Fed.Appx. 172, 177-78, 2015 WL 9311394, at *4 (3d Cir. Dec. 23, 2015); United States v. Madrid, 805 F.3d 1204, 1211 (10th Cir.2015) ("it stretches credulity to say that we can apply the residual clause of the Guidelines in a way that is constitutional, when courts cannot do so in the context of the ACCA”); United States v. Darden, 605 Fed.Appx, 545, 546 (6th Cir.2015). But see United States v. Lee, No. 13-10517, 821 F.3d 1124, 1135-36, 2016 WL 2638364, at *10 (9th Cir. May 6, 2016); United States v. Matchett, 802 F.3d 1185, 1195-96 (11th Cir.2015) (Guidelines cannot be challenged for vagueness).
Moreover, other Circuits, including the First Circuit, have questioned whether the Guidelines’ Residual Clause remains constitutional after Johnson, or have adopted the government’s concession that the Guidelines’ Residual Clause was unconstitutional. See United States v. Soto-Rivera, 811 F.3d 53, 59 (1st Cir.2016) (conducting a career offender analysis without relying on the residual clause because the government had conceded that Johnson's reasoning applied to the Guidelines); United States v. Taylor, 803 F.3d 931, 933 (8th Cir.2015) (remanding to the district court to decide whether the career offender residual clause is unconstitutionally vague because precedent reasoning that Guidelines cannot be challenged for vagueness doubtful after Johnson); United States v. Castro-Vasquez, 802 F.3d 28, 38 (1st Cir.2015) ("Intervening authority has called the residual clause in question.”); Ramirez v. United States, 799 F.3d 845, 856 (7th Cir,2015)(assuming that the Guidelines are unconstitutionally vague although neither party had briefed the issue),
. There is another exception; " 'watershed rules of criminal procedure’ implicating the fundamental fairness and, accuracy of the criminal proceeding.” Saffle v. Parks, 494 U.S. 484, 495, 110 S.Ct. 1257, 108 L.Ed.2d 415 (1990) (quoting Teague, 489 U.S. at 311-12, 109 S.Ct. 1060). It is not relevant here.
. The purpose of construing :the “new rule” concept somewhat narrowly and limiting the retroactive application of new-rules on collateral review stems from the deterrent purpose of the habeas writ. See Saffle, 494 U.S. at 488, 110 S.Ct. 1257. As the Supreme Court explained in Saffle:
Foremost among [the underlying purposes of the habeas writ] is ensuring that ... *298courts conduct criminal proceedings in accordance with the Constitution interpreted at the time of the proceedings. The threat of habeas serves as a necessary additional incentive for trial and appellate courts throughout the land to conduct their proceedings in a manner consistent with established constitutional standards. In order to perform this deterrence function, the habe-as court need only apply the constitutional standards that prevailed at the time the original proceedings took place, The 'new rule’ principle therefore validates reasonable, good-faith interpretations of existing precedents made by ... courts even though they are shown to be contrary to later decisions.
Id, (internal quotation marks, citations, and alterations omitted).
. Federal courts usually grapple with the question of whether a new constitutional rule is retroactive in two contexts: 1) the Supreme Court announces a new rule on direct review of a criminal defendant’s petition and another criminal defendant, whose conviction became final before the new rule was announced, later petitions to have the new rule applied in his case, see, e.g., Montgomery v. Louisiana, — U.S. -, 136 S.Ct. 718, 193 L.Ed.2d 599 (2016) (prohibition of mandatory life without parole for juvenile offenders is retroactive); Butterworth v. United States, 775 F.3d 459 (1st Cir.2015), cert. denied, — U.S, -, 135 S.Ct. 1517, 191 L.Ed.2d 450 (2015) (a rule that any fact leading to the imposition of a mandatory minimum sentence must be found by a jury beyond a reasonable doubt is not retroactive); 2) a petitioner asks a federal court to extend an old rule (i.e., a Supreme Court decision that precedes the time when the petitioner's conviction became final), see Teague, 489 U.S. at 209, 109 S.Ct. 1060 (the criminal defendant had petitioned for, among other things, the extension of a Supreme Court precedent).
The unusual debate about whether the Court must apply one versus two new rules stems from the posture of this case: the Court is asked to “extend” in a novel way and not simply apply (at least according to the government) the (new) ruling of a case decided by the Supreme Court after Ramirez’s conviction became final, This difference in context is, however, immaterial to the retroactivity analysis, The retroactivity framework in Teague was not a question of context but one of purpose: establishing whether, in a collateral *299attack, it would be equitable to adopt the “new rule urged by petitioner [in a certain] case” and "give petitioner the benefit of that new rule even though it would not be applied retroactively to others similarly situated.” Teague, 489 U.S. at 315, 109 S.Ct. 1060. The plurality decided that the rule urged by the petitioner there did not fall under either of the two exceptions to the retroactivity bar, id, at 314-15, 109 S.Ct. 1060, and “refuse[d] to announce a new rule in a given case unless the rule would be applied retroactively to the defendant in the case and to all others similarly situated[,]” id. at 316, 109 S.Ct. 1060.
. The Court acknowledges that opinions ' from the Seventh Circuit note that the Johnson rule is categorically applicable to the Guidelines. See, e.g., Stork v. United States, No. 15-2687, 2015 WL 5915990, at *1 (7th Cir. Aug. 13, 2015) (authorizing a second or successive Section 2255 motion to vacate a career offender sentence "[b]ecause Johnson announced a new substantive rule of constitutional law made categorically retroactive to cases on collateral review by the Supreme Court”). The First Circuit, however, has recently denied the authorization of such second or successive Section 2255 motions. See Ahern v. United States, No. 15-2176 (1st. Cir. May 4, 2016); Turner v. United States, No. 16-1145 (1st. Cir. May 4, 2016) (summarily denying the petition for the reasons stated by the government in its opposition to this successive Section 2255 motion). Second or successive Section 2255 motions face the added hurdle that a petitioner may only invoke the application of a new rule to his case if the Supreme Court has already "made retroactive” this new rule to cases on collateral review. 28 U.S.C. § 2255(h)(2). This requirement has been interpreted as requiring the Supreme Court, and no other lower court, to have already “declared” the retroactivity of the new rule. See Cuevas v. Derosa, 386 F.3d 367, 368 (1st Cir.2004). Thus, the First Circuit’s post-Welch denial of these Section 2255 petitions suggests that it does not subscribe to *300the cátegorical approach to Johnson's retroactive application to the Guidelines.
. The exception to this rule is discussed above, see supra note 10, and is not relevant here.
. In arguing that Johnson, as applied to the Guidelines, is procedural, the government relies on a line of cases from other Circuits that address non-constitutional claims for relief raised via Section 2255 motions. Gov’t.'s Opp'n 14; see Sun Bear v. United States, 644 F.3d 700, 705 (8th Cir.2011); United States v. Foote, 784 F.3d 931, 939 (4th Cir.2015) (collecting cases and concluding that there is no longer any Circuit decision "whereby a challenge to one’s change in career offender status, originally determined correctly under the advisory Guidelines, is cognizable on collateral review”). These decisions and the cases referenced in these decisions, however, addressed a petitioner’s non-constitutional claims brought under Section 2255 on the , basis that the sentence had been “in excess of the maximum authorized by law, or [was] otherwise subject to collateral attack[.]” 28 U.S.C. § 2255. Such claims are subject to the miscarriage of justice cognizability standard. Foote, 784 F.3d at 936; see generally Kirby J. Sabra, Note, Miscarriage of Justice: Post-Booker Collateral Review of Erroneous Career Offender Sentence Enhancements, 96 B.U. L. Rev. 261 (2016); Ashley P. Leavitt, Federal Sentencing Post Johnson and Welch: The “Nuclear Explosion” of Federal Sentencing Reform 30 (on file with the Court) (noting the "glaring contrast” between calling Johnson as-applied to the Guidelines "procedural” under Teague when Gall mandates that "district courts must begin their analysis with the Guidelines and remain cognizant of them throughout the sentencing process,” Gall, 552 U.S. at 50 n. 6, 128 S.Ct. 586 (emphasis added)). Under that standard, a non-constitutional error in calculating a sentence that is not unlawful (not "without, or in excess of, statutory authority”) is not cognizable under Section 2255. Sun Bear, 644 F.3d at 705. Ramirez’s constitutional claims are a separate category of claims cognizable under Section 2255 and are not subject to the miscarriage of justice standard of review. 28 U.S.C. § 2255.
. The Court is aware that district courts outside of the First Circuit have reached different conclusions on this question. Indeed, a number of district courts have held this rule to be procedural and non-retroactive. See Cummings v. United States, No. 15-CV-1219-JPS, 2016 WL 799267 (E.D.Wis. Feb. 29, 2016); United States v. Stork, No. 3:10-CR-132, 2015 WL 8056023 (N.D.Ind. Dec. 4, 2015); Frazier v. United States, No. 109CR188CLCSKL1, 2016 WL 885082, at *5 (E.D.Tenn. Mar. 8, 2016) (“Unlike the ACCA — a statute that shifts the defendant’s penalty range and minimum and maximum terms of imprisonment — the Guidelines merely guide the execution of a court’s discretion in selecting the appropriate sentence from within an otherwise stagnate range of lawful penalties.”); Hallman v. United States, No. 3:15-CV-00468-MOC, 2016 WL 593817, at *5 (W.D.N.C. Feb. 12, 2016)-(holding the rule to be procedural because, according to Peugh, the failure to correct a- Guidelines error is a procedural error); United States v. Willoughby, No. 3:10 CR 431, 144 F.Supp.3d 935, 944, 2015 WL 7306338, at *7,(N.D.Ohio Nov. 18, 2015) ("Because the Sentencing Guidelines must always fit within the limits set by Congress, an erroneous career-offender designation carries no risk that a defendant faces a punishment that the law- cannot impose upon him.”) (internal quotation marks; and citation omitted). But see United States v. Dean, No. 3:13-CR-00137-SI, 169 F.Supp.3d 1097, 1118-19, 2016 WL 1060229, at *16 (D.Or. Mar. 15, 2016) (holding that Ninth Circuit precedent mandated a categorical retroactive application of Johnson to the Guidelines' Residual Clause).
. The percentage of upward departures varies by type of primary offense, with more serious offenses such as manslaughter or arson subject to upward departure at a higher rate; drug offenses receive upward departures in less than one percent of cases. U.S.S.C., Sourcebook of Federal Sentencing Statistics FY 2014, Table 32.
. This Court’s sentencing practice makes the Guidelines central to its sentencing decision and does not differ from the practice of other federal district courts in this country. Invariably, the Court follows the same four steps in sentencing a defendant, which it announces at a defendant’s sentencing hearing prior to making the ultimate determination;
This is a sentencing that proceeds under 18 United States Code, Section 3553(a). Sentencing in this session of the Court proceeds in four steps. The first step is to calculate the highest sentence that is permissible under the constitution. The second step is to look at the average sentences that have been imposed for crimes of this sort. I do not sentence from any average, but I look at the averages to inform me as to the weight to be given to the advisory sentencing guidelines. Third, the Court must accurately' calculate the advisory sentencing guidelines. Those three steps are largely arithmetic. If counsel would differ with any of the calculations that the Court uses please interrupt me and I will try to resolve the matter.
That done, we turn to the fourth and most important step, and that is to fashion a fair and a just sentence for Mr. Ramirez having in mind the needs of society and his particular circumstances.
Now, I calculate the highest constitutionally permissible sentence by looking, without any mitigating factors at all, to the top of the sentencing guideline matrix that would apply. To go any higher than that would, it seems to me, in our quasi-determinant system of sentencing be a unprincipled departure.
Tr. Disposition Rigoberto Ramirez 6:18-7:16.
. As the decisions in Kandirakis and Gurley make clear, since Booker this Court never would have sentenced Ramirez to 12 years in prison had it not been for his erroneous career offender designation. At most, his sentence would have been 63 months. See 2011 Federal Sentencing Guidelines Manual — Sentencing Table, http://www.ussc.gov/sites/ default/files/pdf/guidelinesmanual/2011/ manual-pdf/Sentencing_Table.pdf; PSR 11, 29; Tr. Disposition Rigoberto Ramirez 7:11-16, 8:25-9:2.
. This differential between the sentencing range suggested by the. Guidelines with and without the career offender designation is what distinguishes Ramirez’s case from the related question of whether the rule of Peugh — that applying to a defendant an upwardly shifted sentencing range that was promulgated after the defendant committed his criminal acts violates the Ex Post Facto Clause, Peugh, 133 S.Ct. at 2075-76, — is retroactive, which some courts of appeal have answered in the negative, see, e.g., Conrad v. United States, 815 F.3d 324, 326, 328 (7th Cir.2016) (holding that a petitioner requesting the retroactive application of Peugh is not entitled to relief because “the concern with overburdening the courts with postconviction litigation has controlling weight” since the upward shift in the advisory Guidelines sentencing range does not result in “a punishment that the law cannot impose upon [the petitioner]” (quoting Schriro, 542 U.S. at 352, 124 S.Ct. 2519)). A designation as criminal offender under the Guidelines' Residual Clause also shifts the sentencing range in the same direction, upward; but given the magnitude of the shift and its virtually certain impact on the actual length of time that a defendant is sent to prison for, Johnson, as applied to the Guidelines, fits more within the category of substantive rules with procedural com-ponente, see Montgomery, 136 S.Ct. at 734-735, than in that of procedural rules with “substantive effects,” see Conrad, 815 F.3d at 327.
. The Supreme Court in Montgomery explains, in terms eerily relevant to the context here, that:
Miller, it is true, did not bar a punishment for all juvenile offenders, as the Court did in Roper or Graham. Miller did bar life without- parole, however, for all but the rarest of juvenile offenders, those whose crimes reflect permanent incorrigibility. For that reason, Miller is no.less substantive than are Roper and Graham. Before Miller, every juvenile convicted of a homicide offense could be sentenced to life without parole. After Miller, it will be the rare juvenile offender who can receive that same sentence.
136 S.Ct. at 734.
. The government attempts to distinguish Montgomery from this case by arguing that the rule of Miller was retroactive because it allowed the sentencing judge to consider a broader, more lenient range of sentence than it could have before. Gov't.'s Opp'n 17. According to the government, the Montgomery rationale would not apply to the rule here *304because a federal judge always had the option to consider the same range of sentences, with or Without the invalidation of the Guidelines’ Residual Clause. Id. As discussed, arguing that the invalidation of the Guidelines' Residual Clause does not change the magnitude of a defendant’s sentence falls flat in the face of existing empirical evidence and of the procedural hurdles cabining a judge’s discretion.
. This risk, backed by empirical data, also mutes an argument common among the district court opinions reaching the opposite ret-roactivity conclusion and also present in the government’s brief, that since not applying Johnson to the Guidelines retroactively does not result in “a punishment that the law cannot impose upon [the offender],” Schriro, 542 U.S. at 352, 124 S.Ct. 2519, the new rule here cannot be a substantive rule. See, e.g., Willoughby, No. 3:10 CR 431, 144 F.Supp.3d at 944-45, 2015 WL 7306338, at *7; Gov’t’s Opp’n. 13; see also Conrad, 815 F.3d at 328 (making the same argument when discussing the retroactivity of Peugh). As discussed before, the category of substantive rules is not so narrowly ljmited as to require an impact on one hundred percent of a class of offenders in order to have a new rule retroactively applied; the question of retroactivity is framed as an issue of "risk.” Teague, 489 U.S. at 312, 109 S.Ct. 1060. Substantive rules ”alter[] the range of conduct or the class of persons that the law punishes.” Schriro, 542 U.S. at 352, 124 S.Ct. 2519. So does a rule declaring the Guidelines’ Residual Clause unconstitutionally vague: it alters the class of persons subject to career offender-enhanced sentences. This class no longer includes individuals whose past offenses are crimes of violence solely as a result of the Guidelines' Residual Clause.
. The Court rejects the government’s argument that the rule at issue here must be procedural because the Supreme Court in Peugh declared that errors in calculating a defendant’s advisory Guidelines range as "procedural,” rather than substantive, and thus, non-retroactive. Gov't.'s Opp’n 16-17; see Peugh, 133 S.Ct. at 2083 ("Failing to calculate the correct Guidelines range constitutes procedural error.”) (citing Gall, 128 S.Ct. at 597). Both Peugh and Gall, the case on which the Peugh Court relies in its discussion of procedural and substantive rules, employ the terms substantive and procedural in a context unrelated to Teague retroactivity. See Peugh, 133 S.Ct. at 2083 (discussing procedural errors as relevant to the standard and scope of appellate review); Gall, 128 S.Ct. at 597 (same). Indeed, in Gall, the Supreme Court uses the term "substantive” as a measure of whether, for the purpose of appellate review, a district court’s sentence is reasonable or appropriate. See 128 S.Ct. at 597. As these uses of the terms "procedural” and “substantíve” are unrelated to concerns about the risk of condemning an innocent individual or sentencing a defendant to an improper punishment, see Peugh, 133 S.Ct. at 2083, they do not control this Court’s analysis under Teague. Cf., e.g., Sun Oil Co. v. Wortman, 486 U.S. 717, 726, 108 S.Ct. 2117, 2124, 100 L.Ed.2d 743 (1988)("substantive” may mean different things in different contexts: it has a different meaning under the Erie doctrine as opposed to its purpose for the conflict of laws).