Appellee, Joseph M. Lafty, was charged with simple assault, aggravated assault, possession of an instrument of *431crime-generally, possession of an offensive weapon, and criminal conspiracy as a result of the severe beating of Ronald Thomaston on June 8, 1979 on an elevated public transportation platform at Kensington and Allegheny Avenues in Philadelphia. Appellee accosted the victim uttering a disparaging racial remark and then proceeded to beat him with a “two by four” board. The victim did not provoke the actions of appellee and his companions. Mr. Thomaston underwent surgery on his right elbow, casts were applied to his fractured arms and he remained in Germantown Hospital for ten days. His arms were fractured as he repelled blows to his head and rib cage.
Following a non-jury trial on January 30, 1980, appellee was found guilty of aggravated assault and criminal conspiracy. Appellee’s post-verdict motions alleged that the trial court erred in granting the Commonwealth’s petition for an extension of the trial date under Pa.R.Crim.P. No. 1100. On July 15, 1980, following a brief hearing, the lower court agreed with appellee that his speedy trial rights were violated. Accordingly, appellee was discharged. The Commonwealth filed this appeal.
Criminal charges were filed against Mr. Lafty on the day of the crime, June 8, 1979. As a result, the original estimated run-date for trial under Rule 1100(a)(2) was December 5, 1979. The preliminary hearing was scheduled for June 13, 1979; however, a continuance to July 13, 1979 was necessary due to the victim’s unavailability as he remained a patient at Germantown Hospital. The preliminary hearing did take place on July 13, 1979, and appellee was bound for court on all charges.
On September 18, 1979, the first trial date, appellee requested a continuance in order to locate a defense witness. This was granted and trial was continued to October 29, 1979. On this latter date, trial was again continued to December 11, 1979; the complainant was undergoing oral surgery and was unable to appear. Recognizing that the December 11th date extended beyond the original estimated run-date, the court questioned appellee as to whether he *432was willing to waive his rights under Rule 1100. Appellee agreed to do so and signed a boiler-plate written form to memorialize the waiver.
On December 11, 1979, the complainant arrived late for court. He was not available earlier that day; therefore, trial was continued for a third time. On the following day the Commonwealth filed a petition for extension under Rule 1100(c), alleging that fifty-four days were excludable from the one-hundred-and-eighty-day period between the filing of the complaint and commencement of trial, and that it had exercised due diligence in promptly prosecuting appellee. The lower court conducted a hearing on this petition for an extension on January 14, 1980. Oddly enough, appellee did not file an answer and accompanying motion to dismiss in response to that petition until January 18, 1980, four days following the hearing. In extending the run-date to January 28, 1980, the court agreed that fifty-four days were excludable. Trial was scheduled for and did commence on January 30, 1980, two days beyond the recomputed run-date. The court believed that January 30th was the earliest available date for trial despite the Commonwealth’s exercise of due diligence.
The Commonwealth’s primary contention on appeal is that appellee waived his right to speedy trial. With respect to this waiver argument, the Commonwealth contends 1) that appellee did not pursue his Rule 1100 rights at any time during the pre-trial stage; 2) that appellee raised no objection at the hearing on the petition for an extension while the lower court re-computed the run-date as January 28, 1980; 3) that appellee insufficiently raised a brief and general objection to the lower court’s finding of due diligence at that hearing; and 4) that appellee’s answer and motion to dismiss, containing specific objections to the run-date extension and the Commonwealth’s allegation of due diligence, were not filed until four days following the Rule 1100 extension hearing. The Commonwealth further alleges that it exercised due diligence throughout the proceed*433ings; therefore, any delays in instituting trial were not attributed to its preparation.
As we are aware of the opinion that the Commonwealth continuously exercised due diligence in attempting to bring appellee to trial, it is not necessary to address whether appellee waived his Rule 1100 rights. The order is therefore reversed, judgment of sentence is reinstituted and the matter remanded for resentencing.
Although Rule 1100(a)(2) requires the commencement of trial no later than one hundred and eighty days following the filing date of the written criminal complaint, certain days can be excluded from this period so that trial may actually occur beyond one hundred and eighty days from the filing date. This proviso is set forth in Rule 1100(d) as follows:
(d) In determining the period for commencement of trial, there shall be excluded therefrom:
(1) the period of time between the filing of the written complaint and the defendant’s arrest; provided that the defendant could not be apprehended because his whereabouts were unknown and could not be determined by due diligence;
(2) any period of time for which the defendant expressly waives Rule 1100;
(3) such period of delay at any stage of the proceedings as results from:
(i) the unavailability of the defendant or his attorney;
(ii) any continuance granted at the request of defendant or his attorney.
The first trial continuance was granted at appellee’s request. For the purpose of giving appellee an opportunity to locate a defense witness, trial was continued from its original date of September 18, 1979 to October 29, 1979. Under the present wording of Rule 1100(d), the entire forty-one day period from September 18th to October 29th would be excludable from the run-date calculation. However, the lower court properly excluded only eleven days *434due to the fact that Rule 1100(d)(2), as it existed at the time of the lower court proceedings, provided for the exclusion of any period resulting from “any continuance in excess of 30 days granted at the request of the defendant or his attorney, provided that only the period beyond the 30th day shall be excluded.” The eleven-day exclusion moved the run-date to December 16, 1979.
The lower court excluded an additional forty-three days from the period for commencement of trial as a result of appellee’s signing a written waiver of Rule 1100 rights on October 29, 1979. This waiver contained standard preprinted language and provided blank spaces for the original run-date, reasons for the continuance, and extended date for trial. Although the form was executed by appellee, his counsel, the prosecutor and the presiding judge, none of the blank spaces was completed. Apparently, the lower court did not consider that a critical defect; instead, the court looked to the colloquy conducted at the time the waiver was signed to determine whether the waiver was intelligently, knowingly and voluntarily made. With the addition of these forty-three days, the run-date became January 28, 1980. We agree with appellee that the validity of this written waiver is in question. We need not, however, address this issue. We are satisfied, given the December 16th run-date, that the Commonwealth presented a timely petition to extend and attempted with due diligence to bring appellee to trial prior to the actual trial date of January 30, 1980.1
In reviewing whether a lower court properly ruled that the Commonwealth has or has not met its burden of proving due diligence in a Rule 1100 extension hearing, we *435are limited to considering evidence presented by the Commonwealth and uncontradicted evidence presented by the defendant. Commonwealth v. Bright, 303 Pa.Super. 98, 449 A.2d 596 (1982); Commonwealth v. Sharp, 287 Pa.Super. 314, 430 A.2d 302 (1981). To carry its burden of proving due diligence, the Commonwealth must do more than merely allege due diligence. Evidence must be presented and allegations proven. Commonwealth v. Antonuccio, 257 Pa.Super. 535, 390 A.2d 1366 (1978); Commonwealth v. Porter, 251 Pa.Super. 346, 380 A.2d 812 (1977).
Here, the Rule 1100 extension hearing on January 14, 1980 did not consume more than five minutes. In fact, no testimony was presented; only the statements of the court, defense counsel and prosecutor appear of record. Nevertheless, evidence of due diligence was elicited as the court read notations from the record. In doing so, it noted 1) a continuance of the preliminary hearing from June 13, 1979 to July 13, 1979 due to the complainant’s hospital confinement; 2) the defense request for a trial continuance from September 18, 1979 to October 29, 1979; 3) a second trial continuance from October 29, 1979 to December 11, 1979 as a result of the complainant’s oral surgery; and 4) the trial continuance from December 11, 1979 to January 30, 1980 due to the complainant’s late arrival in court. These court notations were not challenged by appellee.
In Commonwealth v. Bright, supra, this Court was similarly confronted with reviewing an extension hearing where the defendant offered no evidence and the Commonwealth simply offered notations of record made earlier by the court upon granting two continuances due to the unavailability of the complainant on one occasion and the arresting officer on another. In near categorical fashion, the Bright court upheld the sufficiency of court notations in lieu of testimonial or other evidence to demonstrate the Commonwealth’s exercise of due diligence. See also Commonwealth v. Gibson, 248 Pa.Super. 348, 375 A.2d 132 *436(1977) and Commonwealth v. Kollock, 246 Pa.Super. 16, 369 A.2d 787 (1977).
The Bright position was maintained by this Court in Commonwealth v. Harris, 315 Pa.Super. 544, 462 A.2d 725 (1983). Four prior listings and accompanying court notations were reviewed by the hearing judge at the extension hearing. Each of the listings respited in a continuance of the trial date. Once again, the Harris court, in similarly terse fashion, recognized the propriety of a hearing court in using court records in determining due diligence.
It enhances our disposition of the instant matter to consider the treatment which Bright and Harris accorded other issues following their recognition of the sufficiency of court notations. For example, in Bright, the first continuance was granted to accommodate the vacationing complaining witness’. When the arresting officer went on vacation, a second continuance was granted. It was of no consequence to the Bright court that a witness’ unavailability was the result of “vacation, illness or other reasons____” So long as the witness’ unavailability is through no fault of the Commonwealth, a finding of due diligence is warranted and an extension of trial is proper. Here, trial was continued when the complainant was undergoing oral surgery and again when he was late for trial. Insofar as the surgery and tardiness were not due to the Commonwealth’s failure to subpoena or notify the complainant of trial, there was no evidence of lack of due diligence. Furthermore, there was no evidence that the Commonwealth knew or had reason to know that the complainant would be unavailable on those two trial dates.
Also, in Harris and Bright, no evidence was submitted by the defendant at the extension hearing. Instead, the defendant asserted quite generally that the Commonwealth did not demonstrate due diligence. Here, upon the hearing court’s pronouncement of the January 31, 1979 extension date, appellee’s counsel retorted: “I object to the finding of due diligence.” N.T. p. 3, January 14, 1980. *437This too amounts to nothing more than an innocuous objection to the court’s reliance on notations of record. It is evident, then, that where due diligence is founded upon uncontroverted matters of record, appellate review will result in affirmance. Commonwealth v. Kite, 321 Pa.Super. 411, 468 A.2d 775 (1983).
In finding the Commonwealth to have exercised due diligence, we note the Pennsylvania Supreme Court’s policy consideration in Commonwealth v. Genovese, 493 Pa. 65, 425 A.2d 367 (1981):
In determining whether an accused’s right to a speedy trial has been violated, consideration must be given to society’s right to effective prosecution of criminal cases, both to restrain those guilty of crimes and to deter those contemplating it. Commonwealth v. Johnson, 487 Pa. 197, 409 A.2d 308, note 4 (1979). The administrative mandate of Rule 1100 certainly was not designed to insulate the criminally accused from good faith prosecution delayed through no fault of the Commonwealth. Commonwealth v. Genovese, 493 Pa. at 70, 425 A.2d at 370.
Accordingly, we reverse, reinstate the judgment of sentence and remand for sentencing. Jurisdiction relinquished.
SPAETH, President Judge, files a concurring opinion.. Contrary to appellee’s position, the Pennsylvania Supreme Court decisions in Commonwealth v. Ehredt, 485 Pa. 191, 401 A.2d 358 (1979) and Commonwealth v. Mayfield, 469 Pa. 214, 364 A.2d 1345 (1976), are not applicable. Those opinions provide for the Commonwealth's proof, prior to a grant of a petition to extend the trial date, of its exercise of due diligence and that the actual trial date is the earliest date available. This two-pronged burden of proof applies only where delay is judicially-caused. There is no evidence here of judicial delay.