Breaking: NHL enforcer injured, will not return tonight.

A National Hockey League enforcer has been knocked out of the game.

According to an official report from the Ottawa Senators communications department, 28-year-old veteran defenseman Mark Borowiecki has been injured this evening and will not return to the game.

At this time the specific nature of his injury is unclear, however Senators communications is reporting that it is being classified as an "upper-body injury." 

Borowiecki was involved in a fight with Vancouver Canuck Derek Dorsett this evening so while this is purely speculative, it seems like that may be the source of his injury. 

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Update: Video with audio of the fight.