Twenty-one years ago, a measles outbreak cancelled the New Jersey state high school hockey championship game. The two title contenders—St. Joseph’s and Delbarton—were declared co-champions and the world moved on. But for more than two decades the players have wondered who would have triumphed that day. This past weekend, they finally got an answer, when the aging jocks, now lawyers, fire fighters and prison guards, staged a “rematch” of the game that never was, raising more than $200,000 for charity, and buying some closure.