[1] The NHL adopted the penalty rules of the amateur Ontario Hockey Association (OHA) for this season.
The Tigers asked Cleghorn where he wanted to play other than Ottawa, and he expressed interest in joining his brother on the Montreal Canadiens and so prior to the start of this season, the NHL's first multiple-player trade in its history was made when Billy Coutu and Sprague Cleghorn of the Hamilton Tigers were traded to the Montreal Canadiens for Harry Mummery, Amos Arbour, and Cully Wilson.
Canadiens owner George Kennedy never recovered from the influenza he contracted in 1919, and died on October 19, 1921, at age 39.
His widow sold the Canadiens to a unit that would be known affectionately as the Three Musketeers of owners, Leo Dandurand, Louis Letourneau, and Joseph Cattarinich.
Punch Broadbent was the star this year, as he scored 27 goals in 16 consecutive games en route [3] to a 32-goal campaign.
Starting in the Western Canada Hockey League, the Calgary Tigers lost to the Regina Capitals in a match-up to determine second place.
Over in the Pacific Coast Hockey Association, once again, the Vancouver Millionaires faced the Seattle Metropolitans for their league championship.
The first-place Ottawa Senators played off against the second-place Toronto St. Patricks in a two-game total goals series for the O'Brien Cup.
Note: GP = Games played; G = Goals; A = Assists; Pts = Points O'Brien Cup — Toronto St. Patricks Note: GP = Games played; G = Goals; A = Assists; Pts = Points GP = Games Played, GA = Goals Against, SO = Shutouts, GAA = Goals Against Average Source: NHL[5] The following is a list of players of note who played their first NHL game in 1921–22 (listed with their first team, asterisk(*) marks debut in playoffs): The last remaining active player to kick off their NHL career this season was Frank Boucher, who played his final NHL game in the 1943–44 season, although he missed the 1922–23, 1923–24, 1924–25, 1925–26, 1938–39, 1939–40, 1940–41, 1941–42, and 1942–43 seasons.