The 28-year-old winger is out three to four weeks with a broken thumb suffered in Wednesday night's 2-0 win against the Washington Capitals, the team announced in a news release Thursday evening.
The loss of Callahan is a significant blow for a struggling Rangers squad that has sputtered to a 2-4-0 start to the season. The Blueshirts already are without two of their top forwards in Rick Nash (concussion) and Carl Hagelin. Although Hagelin was recently cleared for contact after rehabbing a surgically repaired shoulder, he is not eligible to return until Oct. 29 because he was placed on long-term injured reserve to start the season. Nash's return timetable is murkier, as he was "still feeling symptoms" earlier this week from a head shot suffered last week in the team's 9-2 loss to San Jose.
Callahan's injury comes shortly after he returned from a shoulder injury. Like Hagelin, Callahan had offseason surgery to repair a torn labrum in his left shoulder. He missed the team's season opener but returned for the next game.
Callahan scored his third goal of the season in Wednesday's win against the Capitals.