The Toronto Maple Leafs lost Game 4 to the Florida Panthers on Sunday by a score of 2-0, which now puts the series at 2-2. Tempers flared at the end of the contest, with Max Domi shoving Aleksander Barkov into the boards. That hit caused controversy and NHL Player Safety has punished Domi, fining him $5,000. Here's a look at the play:

With Barkov facing the wall, Domi skated toward him and delivered a hard hit from behind, sending the Panthers’ star head first into the boards. It was undoubtedly a dangerous play, but fortunately for Barkov, he appeared to be OK. Domi was given a five-minute major for boarding.

Maple Leafs forward Max Domi was fined $5,000 -- the maximum amount allowed by the league's CBA -- for boarding Panthers captain Aleksander Barkov in Game 4.