Starting in the 1914–1915 season, the Stanley Cup was awarded exclusively to the winner of a playoff between the NHA and the PCHA regular season winners. The league championship was decided by a two-game total goal playoff between the Wanderers and the Senators. Ottawa won the championship, and the right to defend the Cup against Vancouver in a three-game series in which Vancouver won in dominating fashion. The notion of a league champion being awarded the Cup to defend ceased with that season, as the Portland Rosebuds were the PCHA champions in 1915–1916 but were not automatically accorded the Cup. Instead, they played the Montreal Canadiens for the trophy (and became the first American team to do so), which the Canadiens won in a five-game series. However, both Ottawa in 1915 and Portland in 1916 engraved their names on the Stanley Cup as well as the eventual champions.