Kampfer helped off/By S. Bradley

BOSTON — Bruins defenseman Steven Kampfer left tonight’s game after he was hit along the boards by Ottawa’s Jared Cowen along the right wall of the Senators’ zone at TD Garden.

After the game, Bruins head coach Claude Julien confirmed Kampfer suffered a left knee injury. The second-year pro will undergo an MRI Friday to determine the severity of the injury.

Kampfer is currently battling Matt Bartkowski for the seventh defensemen spot. The Senators beat the Bruins, 2-1.