Pittsburgh Penguins' Mike Matheson out indefinitely with upper-body injury

PITTSBURGH -- Penguins defenseman Mike Matheson is out indefinitely with an upper-body injury suffered in a loss to New Jersey on Thursday.

Penguins coach Mike Sullivan said Matheson is "week-to-week." It is unclear when Matheson was hurt. He skated 19 minutes, 4 seconds in a 6-1 setback that marked Pittsburgh's third straight defeat.

Matheson, who has seven goals and 14 assists in 50 games this season for the Penguins, was part of Pittsburgh's third defensive pairing alongside Chad Ruhwedel.

Pittsburgh recalled P.O. Joseph from its American Hockey League affiliate in Wilkes-Barre/Scranton to provide depth ahead of a visit by the New York Rangers on Saturday. Joseph has appeared in four games this season for the Penguins and has not registered a point.