Major professional sports leagues in the United States and Canada to compete, with the provision that the Stanley Cup winners were to be recognized as "World's Champions". The phrase was repeatedly engraved on the Cup, and continued to be used, when the NHL began admitting American franchises. When the NHL assumed formal control of the Cup in 1947, the resulting agreement required "that the winners of this trophy shall be the acknowledged World's Professional Hockey Champions" (in contrast to the IIHF's Ice Hockey World Championships, at the time contested only by amateurs). When the World Hockey Association commenced play in the 1970s, they sought to challenge for the Stanley Cup,
Jim Mahon Memorial Trophy C League championship. Mahon moved up to the Peterborough Petes for the 1969–70 season, scoring 28 goals, 20 assists, and 48 points as a rookie in 46 games. In the 1970–71 season, he scored 45 goals, 44 assists, and 89 points in 62 games. In the summer of 1971, Mahon died in an electrical accident at his grandfather's home in Maidstone. Mahon would have been eligible for the 1972 NHL Amateur Draft. List of winners of the Jim Mahon Memorial Trophy. Jim Mahon Memorial Trophy The Jim Mahon Memorial Trophy is awarded annually by the Ontario Hockey League since 1972,