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 challenged him to a goalie fight when we chatted before the game, but he didn't want to go. It was strange to see him at the other end of the ice, but I'm sure he felt the same way looking down at our end.
— Vancouver goalie Eddie Lack joking about facing his former teammate Roberto Luongo after the Canucks' win against the Panthers