The Ottawa Senators will have a depleted blue line for the remainder of Thursday's game.
Defenceman Tyler Kleven has been ruled out with an upper-body injury against the Buffalo Sabres, the Senators announced Thursday.
Kleven was injured in the first period when a hard slapshot careened up and appeared to hit him in the head area. He was able to skate off under his own power.
He finished the game with 1:48 of ice time.
Kleven, 24, has three goals and 18 points while appearing in 69 games this season.
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