Torey Krug exits Bruins' Game 4 loss with lower-body injury

The Boston Bruins didn't just lose Game 4 on Friday night -- they also lost one of their top defensemen.

Torey Krug was injured late in the third period of the team's 4-3 overtime loss to the Tampa Bay Lightning, and his status for Game 5 of this Eastern Conference second-round series on Sunday is up in the air.

The Bruins are calling it a lower-body injury. Krug was seen leaving TD Garden on crutches and in a walking boot.

"He went into the boards," Bruins coach Bruce Cassidy told reporters. "[Alex] Killorn kind of had his stick wrapped around him, so I don't think there was anywhere he could go, right into the boards and obviously lost his footing from there. Lower-body injury, he will be evaluated further. Obviously didn't finish the game, so that's never great, but we'll see how he is in the morning."

Krug has three goals and seven assists in 10 postseason games.

Tampa Bay leads the best-of-seven series 3-1.