The 1917 Stanley Cup Final was contested by the Pacific Coast Hockey Association (PCHA) champion Seattle Metropolitans and the National Hockey Association (NHA) and Stanley Cup defending champion Montreal Canadiens. Seattle defeated Montreal three games to one in a best-of-five-game series to become the first team from the United States to win the Cup. The series was also the first Stanley Cup Final to be played in the United States, and the last Stanley Cup Final to not feature a National Hockey League team, as the NHA rebranded as the NHL in November 1917. This was the first major professional sports championship ever won by a Seattle-based team. Won the 1917 Stanley Cup Final on March 26, 1917. Wiki link