The NHL has fined Toronto forward Max Domi $5,000 US for elbowing Philadelphia Flyers forward Garnet Hathaway during the Maple Leafs' 3-2 overtime win Sunday.

Domi received an elbowing minor penalty on the play, which occurred at 5:08 of the third period.

Hathaway was involved in a first-period fight with Jake McCabe that left the Leafs defenceman dazed and unable to return.

McCabe, objecting to Hathaway running into Leafs goaltender Dennis Hildeby, goaded Hathaway into dropping his gloves and then got the worst of the ensuing scrap. McCabe, losing his balance while absorbing a right to the head, fell awkwardly as the fight ended with Hathaway landing on top of him.

McCabe tried to get up but failed — prompting teammates and the trainer to quickly offer assistance. He missed the rest of the game with what the team called an "upper-body injury."

Domi took matters into his own hands in the third period, targeting Hathaway's head twice with an elbow along the boards in the Flyers' end.

The fine, the maximum allowed under the league's collective bargaining agreement, goes to the Players' Emergency Assistance Fund.

Also Monday, the Leafs placed McCabe on injured reserve. The earliest he can return is Jan. 14 when Toronto hosts Dallas, meaning McCabe will miss games Tuesday in Philadelphia, Thursday in Carolina and Saturday at home to Vancouver.