Olli Maatta will be out indefinitely for the Pittsburgh Penguins because of an upper-body injury.
The 24-year-old defenseman was injured on a hit by Philadelphia Flyers forward Phil Varone during the first period of the Penguins' 4-1 win at Wells Fargo Center on Monday. Maatta left the game and did not return.
Maatta, who was placed on injured reserve Tuesday, has 13 points (one goal, 12 assists) in 55 games with Pittsburgh this season. The No. 22 pick in the 2012 NHL Draft, he has 106 points (25 goals, 81 assists) in 357 NHL games through six seasons, all with the Penguins.
Pittsburgh, which hosts the Edmonton Oilers at PPG Paints Arena on Wednesday (8 p.m. ET; NBCSN, SN, TVAS), holds the second wild card into the Stanley Cup Playoffs from the Eastern Conference and is tied in points with the Columbus Blue Jackets for third place in the Metropolitan Division.