St. Louis Blues forward Ryan Reaves will have a hearing with the NHL's Department of Player Safety after boarding San Jose Sharks defenseman Matt Tennyson on Monday, the league announced.

Reaves sent Tennyson face-first into the boards from behind, earning a five-minute major penalty and a game misconduct on the play.

Tennyson appeared unconscious as he hit the glass, and then his head slammed into the ice violently after the collision. He's "likely concussed," head coach Pete DeBoer said Monday.

Reaves has no prior history with the DOPS, but is likely facing a suspension.

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