During his career, Cooke has been criticized by the media, league, fans, and team executives, and other players for his hitting in ways more likely to cause injury such as hits to the head or hits to an opponent's knee.[15][16] Of note, CBC host and former head coach Don Cherry has been consistently and effectively critical of Cooke, personally, and has faulted the NHL for not responding appropriately to Cooke's intents to render opposing players unable to play over the years.[17]
In the 2008–09 season, with the Penguins, Cooke was suspended on two different occasions. In November, he received a two-game suspension for a check to the head of the New York Rangers' Artem Anisimov. In January 2009, he received another two-game suspension for a hit to the head of Scott Walker of the Carolina Hurricanes.[18]
On March 7, 2010, in a game against the Boston Bruins, Cooke delivered a blow to the head of Boston's Marc Savard, concussing Savard and forcing him to miss almost two months. Cooke said he was not intending to hurt Savard;[19] Bruins General Manager Peter Chiarelli, however, characterized the hit as "a very surgical hit to the head."[20] Fellow Penguin teammate Bill Guerin also analyzed Cooke's hit on Savard to Pittsburgh reporters.[20] "If a guy gets hurt like that with a shot to the head, there's got to be something," said Guerin, adding that he expected Cooke to be suspended. "I understand he (Cooke) is on my team but, hey, he's in a tough spot."[21] In a ruling, which has received wide criticism,[20][22] Cooke was not given a suspension for the hit on Savard.[23] On March 24, in response to the outcry over Cooke not being suspended, the league implemented a new rule aimed at prohibiting blindside hits to the head like the one Cooke delivered to Savard. In announcing the rule, NHL Commissioner Gary Bettman said, "The elimination of these types of hits should significantly reduce the number of injuries, including concussions, without adversely affecting the level of physicality in the game."[16][24] Earlier, Bettman appeared on Leafs Lunch on Mojo 640 in Toronto to discuss the Cooke hit on Savard. "I was very unhappy and upset with that hit," said Bettman. "I was more upset there was nothing (in the League rules) to do to punish it."[15]