Kunitz is the latest Penguin to go down with an injury. Center Evgeni Malkin missed his ninth straight game Sunday because of a shoulder injury, and forward Carl Hagelin was out for his 12th straight game because of a lower-body injury.
Defenseman Ron Hainsey, acquired from the Hurricanes at the trade deadline, returned Friday after missing seven games because of an upper-body injury.
Kunitz, 37, has nine goals and 20 assists in 71 games this season. He is a seven-time 20-goal scorer and is a free agent at the end of the season.