Events in Sport
- 1917-03-11 1st NHL championship game ever played, Toronto Arenas beats Montreal Canadiens 7-3 in 1st of 2 game set (second game on March 13)
- 1917-11-26 NHL forms with Montreal Canadiens, Montreal Maroons, Toronto Arenas, Ottawa Senators & Quebec Bulldogs; National Hockey Association disbands
- 1917-12-22 In the NHL's first official week of play, 3 players score hat tricks in the same game, for the same team; Corb Denneny, Reg Noble, & Harry Meeking each score 3 for the Toronto Arenas in an 11-4 win over the Ottawa Senators
Malone's 44 Goal Season
1918-03-02 Joe Malone goes scoreless in Montreal Canadiens' 5-3 season-ending loss to Toronto Arenas; finishes the first NHL season with 44 goals, a record that stands until 1944-45
- 1918-03-13 1st NHL championship: Toronto Arenas beat Montreal Canadiens, outscoring them 10-7 in a 2 game set
- 1918-03-30 Stanley Cup, Mutual Street Arena, Toronto, ON: Toronto Arenas (NHL) beat Vancouver Millionaires (PCHA), 2-1 for a 3-2 series victory; first series contested by the new NHL
Vezina 1st Assist
1918-12-28 Montreal's Georges Vezina becomes the first NHL goalie to record an assist during the Canadiens’ 6-3 win over the Toronto Arenas
- 1919-02-20 Foundation NHL club Toronto Arenas are permitted to cease operations due to financial difficulties; later become Toronto St. Patricks and then Maple Leafs
- 1925-03-13 NHL Championship: Montreal Canadiens sweep Toronto Arenas in 2 games