Opinion by
Mr. Justice Potter,The defendant in this case contracted to serve the plaintiff as a baseball player for a stipulated time. During that period he was not to play for any other club. He violated his agreement, however, during the term of his engagement, and in disregard of his contract, arranged to play for another and a rival organization.
The plaintiff by means of this bill, sought to restrain him, during the period covered by the contract.
The court below refused an injunction, holding that to warrant the interference prayed for, “ The defendant’s services must be unique, extraordinary, and of such a character as to render it impossible to replace him; so that his breach of contract would result in irreparable loss to the plaintiff.” In the view of the court, the defendant’s qualifications did not measure up to this high standard. The trial court was also of opinion that the contract was lacking in mutuality; for the reason that it gave plaintiff an option to discharge defendant on ten *216days’ notice, without a reciprocal right on the part of defendant.
The learned judge who filed the opinion in the court below, with great industry and painstaking care, collected and reviewed the English and American decisions bearing upon the question involved, and makes apparent the wide divergence of opinion which has prevailed.
We think, however, that in refusing relief unless the defendant’s services were shown to be of such a character as to render it impossible to replace him, he has taken extreme ground.
It seems to us that a more just and equitable rule is laid down in Pomeroy on Specific Performance, page 31, where the principle is thus declared: “ Where one person agrees to render personal services to another, which require and presuppose a special knowledge, skill and ability in the employee, so that in case of a default the same service could not easily be obtained from others, although the affirmative specific performance of the contract is beyond the power of the court, its performance will be negatively enforced by enjoining its breach. . . . The damages for breach of such contract cannot be estimated with any certainty, and the employer cannot, by means of any damages, purchase the same service in the labor market.”
We have not found any case going to the length of requiring as a condition of relief, proof of the impossibility of obtaining equivalent service. It is true that the injury must be irreparable, but as observed by Mr. Justice Lowrie, in Commonwealth v. Pittsburg, etc., Railroad Company, 24 Pa. 160, “ The argument that there is no ‘irreparable damage’ would not be so often used by wrongdoers if they would take the trouble to discover that the word ‘ irreparable ’ is a very unhappily chosen one, used in expressing the rule that an injunction may issue to prevent wrongs of a repeated and continuing character, or which occasion damages which are estimated only by conjecture, and not by any accurate standard.”
We are therefore within the term whenever it is shown that no certain pecuniary standard exists for the measurement of the damages. This principle is applied in Vail v. Osburn, 174 Pa. 580. That case is authority for the proposition that a court of equity will act where nothing can answer the justice of the case but the performance of the contract in specie; and *217this even where the subject of the contract is what under ordinary circumstances would be only an article of merchandise. In such a case, when owing to special features, the contract involves peculiar convenience or advantage, or where the loss would be a matter of uncertainty, then the breach may be deemed to cause irreparable injury.
The court below finds from the testimony that “the defendant is an expert baseball player in any position; that he has a great reputation as a second baseman; that his place would be hard to fill with as good a player; that his withdrawal from the team would weaken it, as would the withdrawal of any good player, and would probably make a difference in the size of the audiences attending the game.”
We think that in thus stating it, he puts it very mildly, and that the evidence would warrant a stronger finding as to the ability of the defendant as an expert ball player. He has been for several years in the service of the plaintiff club, and has been re-engaged from season to season at a constantly increasing salary. He has become thoroughly familiar with th e action and methods of the other players in the club, and his own work is peculiarly meritorious as an integral part of the team work wdfich is so essential. In addition to these features which render his services of peculiar and special value to the plaintiff, and not easily replaced, Lajoie is well known, and has great reputation among the patrons of the sport, for ability in the position which he filled, and was thus a most attractive drawing card for the public. He may not be the sun in the baseball firmament, but he is certainly a bright, particular star.
We feel therefore that the evidence in this case justifies the conclusion that the services of the defendant are of such a unique character, and display such a special knowledge, skill and ability as renders them of peculiar value to the plaintiff, and so difficult of substitution, that their loss will produce irreparable injury, in the legal significance of that term, to the plaintiff. The action of the defendant in violating his contract is a breach of good faith, for which there would be no adequate redress at law, and the case therefore properly calls for the aid of equity, in negatively enforcing the performance of the contract, by enjoining against its breach.
But the court below was also of the opinion that the contract *218was lacking in mutuality of remedy, and considered that as a controlling reason for the refusal of an injunction. The opinion quotes the nineteenth paragraph of the contract, which gives to the plaintiff a right of renewal for the period of six months beginning April 15, 1901, and for a similar period in two successive years thereafter. The seventeenth paragraph also provides for the termination of the contract upon ten days’ notice by the piaintiff. But the eighteenth paragraph is also of importance, and should not be overlooked.: It provides as follows : “ 18. In consideration of the faithful performance of the conditions, covenants, undertakings and promises herein by the said party of the second part, inclusive of the concession of the options of release and renewals prescribed in the seventeenth and nineteenth' paragraphs, the said party of the first part, for itself and its assigns, hereby agrees to pay to him for his services for said term the sum of 12,400, payable as follows,” etc.
And turning to the fifth paragraph, we find that it provides expressly for proceedings, either in law or equity, “ to enforce the specific performance by the said party of the second part, or to enjoin said party of the second part from performing services for any other person or organization during the period of service herein contracted for. And nothing herein contained shall be construed to prevent such remedy in the courts in ease of any breach of this agreement by said party of the second part, as said party of the first part, or its assigns, may elect to invoke.”
We have then at the outset, the fact that the paragraphs now criticised and relied upon in defense, were deliberatelyjaccepted by the defendant, and that such acceptance was made part of the inducement for the plaintiff to enter into the contract. We have the further fact that the contract has been partially executed by services rendered, and payment made therefor; so that the situation is not now the same as when the contract was wholly executory. The relation between the parties has been so far changed, as to give to the plaintiff an equity arising out of the part performance, to insist upon the completion of the agreement according to its terms by the defendant. This equity may be distinguished from the original right under the contract itself, and it might well be questioned whether the *219court would not be justified in giving effect to it by injunction, without regard to the mutuality or nonmutuality in the original contract. The plaintiff has so far performed its part of the contract in entire good faith, in every detail; and it would, therefore, be inequitable to permit the defendant to withdraw from the agreement at this late day.
The term mutuality, or lack of mutuality, does not always convey a clear and definite meaning. As was said in Grove v. Hodges, 55 Pa. 516, “ The legal principle that contracts must be mutual, does not mean that in every case each party must have the same remedy for a breach by the other.”
In the contract now before us, the defendant agreed to furnish his skilled professional services to the plaintiff for a period which might be extended over three years by proper notice given before the close of each current year. Upon the other hand, the plaintiff retained the right to terminate the contract upon ten days’ notice, and the payment of salary for that time, ánd the expenses of defendant in getting to his home. But the fact of this concession to the plaintiff is distinctly pointed out as part of the consideration for the large salary paid to the defendant, and is emphasized as such. And owing to the peculiar nature of the services demanded by the business, and the high degree of efficiency which must be maintained, the stipulation is not unreasonable. Particularly is this true when it is remembered that the plaintiff has played for years under substantially the same regulations.
We are not persuaded that the terms of this contract manifest any lack of mutuality in remedy. Each party has the possibility of enforcing all the rights stipulated for in the agreement. It is true that the terms make it possible for the plaintiff to put an end to the contract in a space of time much less than the period during which the defendant has agreed to supply his personal services ; but mere difference in the rights stipulated for, does not destroy mutuality of remedy. Freedom of contract covers a wide range of obligation and duty as between the parties, and it may not be impaired, so long as the bounds of reasonableness and fairness are not transgressed.
If the doctrine laid down in Rust v. Conrad, 47 Mich. 449, quoted in the opinion, is to prevail, it would seem that the power of the plaintiff to terminate the contract upon short no*220tice, destroys the mutuality of the remedy. But we are not satisfied with the reasoning intended to support that conclusion. We cannot agree that mutuality of remedy requires that each party should have precisely the same remedy, either in form, effect or extent. In a fair and reasonable contract, it ought to be sufficient that each party has the possibility of compelling the performance of the promises which were mutually agreed upon.
It is true also that the case of Rutland Marble Co. v. Ripley, 10 Wall. 339, also quoted in the opinion, while not turning exclusively upon that point, seems to hold that a contract in which the plaintiff has an option to terminate it in a year, cannot be enforced in equity on account of lack of mutuality; but in Singer Sewing Machine Co. v. Union Buttonhole, etc., Co., Holmes’ Reports, 253,’ Judge Lowell says, with reference to that case: “ I cannot think that the court intended to announce any general proposition that they would never enforce a contract which one party had a right to put ah end to in a year. Everything must depend upon the nature and circumstances of the business.”
This judgment seems to be borne out, for in a later case, that of Franklin Telegraph Co. v. Harrison, 145 U. S. 459; 12 Sup. Ct. Repr. 900, where the plaintiff had a right to terminate the contract for telegraphic service at the end of any year, while the defendant’s obligation continued as long as the plaintiff chose to pay the yearly price for the services, the doctrine that such conditions constituted lack of mutuality does not seem to have been recognized.
In Singer Co. v. Union Co., supra, which was a case where an injunction was allowed against the defendant, although the plaintiff had the right to terminate the contract, Judge Lowell in the course of a strongly reasoned opinion says, page 260, “ In many of the cases that I have cited, the plaintiff had it in his power to end the contract. It is certainly competent to the parties to make a contract which will be equitable and reasonable, and in which their rights ought to be protected while they last, though it may be terminable by various circumstances, and though one ;party may have the sole right to terminate it, provided their stipulation is not one that makes the whole contract inequitable.”
*221On page 258, he says : “I think the fair result of the later cases may be thus expressed. If the case is one in which a negative remedy of injunction will do substantial justice between the parties, by obliging the defendant either to carry out his contract or lose all benefit of the breach, and the remedy at law is inadequate, and there is no reason of policy against it, the court will interfere to restrain conduct which is contrary to the contract, although it may be unable to enforce a specific performance of it.”
The case now before us comes easily within the rule as above stated. The defendant sold to the plaintiff for a valuable consideration the exclusive right to his professional services for a stipulated period, unless sooner surrendered by the plaintiff; which could only be, after due and reasonable notice and payment' of salary and expenses until the expiration. Why should not a court of equity protect such an agreement until it is terminated? The court cannot compel the defendant to play for the plaintiff, but it can restrain him from playing for another club in violation of his agreement. No reason is given why this should not be done, except that presented by the argument that the right given to the plaintiff to terminate the contract upon ten days’ notice destroys the mutuality of the remedy. But to this it may be answered, that as already stated, the defendant has the possibility of enforcing all the rights for which he stipulated in the agreement, which is all that he can reasonably ask; furthermore, owing to the peculiar nature and circumstances of the business, the reservation upon the part of the plaintiff to terminate upon short notice, does not make the whole contract inequitable.
In this connection another observation may be made, which is that the plaintiff by the act of bringing this suit, has disavowed any intention of exercising the right to terminate the contract on its own part. This is a necessary inference from its action in asking the court to exercise its equity power to enforce the agreement made by the defendant not to give his services to any other club. Besides, the remedy by injunction is elastic and adaptable, and is wholly within the control of the court. If granted now, it can be easily dissolved whenever a change in the circumstances or in the attitude of the plaintiff should seem to require it. The granting or refusal of an injunc*222tion or its continuance is never a matter of strict right, but is always a question of discretion to be determined by the court in view of the particular circumstances.
Upon a careful consideration of the whole case, we are of opinion that the provisions of the contract are reasonable, and that the consideration is fully adequate. The evidence shows no indications of any attempt at overreaching or unfairness. Substantial justice between the parties requires that the court should restrain the defendant from playing for any other club during the term of his contract with the plaintiff.
The bill as filed contemplated only the services of defendant for the season of 1901, but it is stated in the argument of counsel, that since the hearing in the court below, and prior to the argument in this court, the plaintiff by due notice renewed the current contract for the season of 1902.
The specifications of error are sustained, and the decree of the court below is reversed, and the bill is reinstated. And it is ordered that the record be remitted to the court below for further proceedings in accordance with this opinion.