Callahan will travel with the team to Raleigh, N.C., but coach John Tortorella said he's not sure if he'll be able to play.
Callahan is second on the team with 25 goals and hasn't missed a game this season. He was forced to sit out the Rangers first-round playoff series last year with a broken suffered from blocking a shot by Boston's Zdeno Chara in the 80th game of the regular season.
You get the right the whistles at the right times, you can leave him out there. He's a beast when it comes to being on the ice. I thought [Saturday] he was a big man. That first period, he did that lateral cut and it was like three bowling pins bounced off him. There's not too many guys that can do that.
— Capitals coach Barry Trotz on Alex Ovechkin, who enters February tied for the NHL lead in goals