Sydney Crosby
The record for the most goals scored by a player in an NHL game is 7, achieved by Joe Malone on January 31, 1920.
Wayne Gretzky-894
The record for the most goals scored by one player in a single NHL game is 7, achieved by Joe Malone in 1920.
The NHL player who holds the record for the most goals scored in a single period is Mario Lemieux, who scored 4 goals in one period on December 31, 1988.
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Peter Staslny
The record for the most goals scored in an NHL game by both teams is 21.
Marian Gaborik - Minnesota Wild * December 20, 2007 vs New York Rangers - 5 goals
Wayne Gretzky
Kevin Lowe
Mario Lemieux. He has the most taken (8) and the most scored (6) in Nhl history. He was 5 for 5 before he came back from retirement in 2001.
No, no NHL player has ever scored a goal in every game of the season.