Callahan, who is considered day-to-day, suffered the injury Monday night against the New Jersey Devils, but was not forced to leave the game. Newly acquired John Scott will take his place in the lineup.
Callahan has 25 goals this season, second-most on the team.
You get more opportunity, and at the end of the day those are the times you've got to step up and show what you're made of. Together as a team, that's how you win games. I think we stuck together. That's kind of our philosophy here. We have good leadership and good guys to lean on.
— Calgary Flames forward Sean Monahan after a win against the Nashville Predators on Friday