New York Islanders defenseman Dennis Seidenberg is out indefinitely and was placed on injured reserve Monday because of an upper-body injury.
Seidenberg was injured in the third period of the Islanders' 3-2 overtime loss to the Florida Panthers on Saturday when he was hit in the chin by a shot.
In 15 games Seidenberg, 35, has four goals, four assists, and an Islanders-best plus-10 rating in 19:20 of ice time per game.
Defenseman Scott Mayfield was recalled from Bridgeport of the American Hockey League on an emergency basis. He had one goal in six games with the Islanders last season. In 12 AHL games this season he has one goal and one assist.
The Islanders play the Tampa Bay Lightning at Barclays Center on Monday (7 p.m. ET; TVA Sports, MSG+, SUN, NHL.TV).