“As to the legality of the contract, it is unclear as a matter of law whether the contract is indeed illegal because that matter rests on unresolved issues of Massachusetts law,” stated Judge Gustavo A. Gelpi . “We must underscore that the issues before us involve important questions of state law and public policy with significant implications, not only for the parties before us, but also for other industries in the state, such as online gambling and horse racing, among others.”