Ryan Callahan left in the third period of Tuesday night's Flyers vs. Rangers game at Madison Square Garden with what appeared to be a left shoulder injury. He didn't return to the game, but did score the game-winning goal before the injury.
Callahan was in a fight with Flyers forward Max Talbot when he fell to the ice and grabbed his shoulder. Talbot let up and Callahan skated off to the bench holding his sagging shoulder. You can see the injury right here.
Callahan is vital to the Rangers' hopes this season. He's not a piece of their potent top line, which features Rick Nash, Brad Richards and Marian Gaborik, but is an important piece when it comes to their secondary attack. He's scored just two points in the young NHL season but has played more than 20 minutes per game thus far.
Callahan had a career year in 2011-12, scoring 29 goals and 25 assists in 76 games for the Rangers.