Sharks center Joe Thornton did not incur any supplemental discipline from the NHL’s Department of Player Safety on Tuesday. Defenseman Brenden Dillon wasn’t quite as fortunate.

Dillon was suspended one game by for his slash on defenseman Madison Bowey in the waning moments of Monday night’s testy affair with the Washington Capitals. It is the first time Dillon has received supplemental discipline from the NHL.

With 4.6 seconds left in the Sharks’ game Monday against the Capitals, Dillon sent the puck into the Capitals zone before he was hit by Bowey against the glass. As Dillon came back from the hit, he slashed Bowey on the left hand before the two began to push and shove. Dillon received a slashing major and a game misconduct.

In its video explanation for the suspension, the league stated after Dillon was hit off balance, he brought his stick down forcefully onto the hand of Bowey. “It is important to note that isn’t a slash delivered as part of a hockey play. Dillon is not attempting to alert an opponent to his presence, or to make a defensive play on a player with the puck.