Matt Grzelcyk Is In NHL's Concussion Protocol, Won't Travel With Bruins To St. Louis

Bruins defenseman Matt Grzelcyk was officially placed in NHL's concussion protocol on Thursday following the nasty hit he took in Game 2 of the Stanley Cup Final on Wednesday night that forced him out of the game and to the hospital.

“He’s in the protocol,” Bruins coach Bruce Cassidy said on Grzelcyk, per CBS Boston. “When we have a further update, we’ll give it to you. We’re going to list him as day-to-day. … Right now, that’s the best I got for you. We’ll see where it goes from there.”

Cassidy has termed Grzelcyk as day-to-day.

According to NBC Sports Boston's Joe Haggerty, Grzelcyk was released from the hospital on Thursday.

Grzelcyk hasn't missed a game yet in these playoffs, and didn't travel with the team to St. Louis ahead of Games 3 and 4.

There's still a chance Grzelcyk could return by the end of the series. In his absence, you've got to think it'll be John Moore, who's a lefty shooter like Grzelcyk. Moore has appeared in only five games these playoffs.