Penguins' Daley leaves game with apparent knee injury

Pittsburgh Penguins defenseman Trevor Daley left Game 4 after a collision with Tampa Bay Lightning forward Ryan Callahan.

Daley appeared to be favoring his left knee while being helped to the Penguins' dressing room.

Head coach Mike Sullivan said he'd have an update Saturday on what he's calling a lower body injury, and multiple reports say Daley left the arena on crutches.

If Daley misses time it's a major blow to the Penguins' blue line. He's contributed six points in 14 games, while earning nearly 23 minutes of ice time.