Callahan left the ice cradling his left arm after he became tangled with the Flyers' Maxime Talbot in a post-whistle scrum. Both parties dropped their gloves, but Callahan grimaced in pain and never threw a punch before tumbling to the ice.
Earlier in the game, Callahan scored his second goal of the season, which turned out to be the game-winner as the Rangers edged the Flyers 2-1.
Rangers coach John Tortorella had no update on Callahan after the game and said he would be re-evaluated Wednesday.
I don't know what to say, to be honest with you. You get a couple [goals], and it's pretty much a done deal. He's been great. I don't know how many times I have said this before: He's giving us a chance and that's all you really want.
— Kings forward Anze Kopitar on rookie goalie Martin Jones, who improved to 8-0-0 after a shootout win over the Avalanche on Saturday