San Jose Sharks rookie forward Tomas Hertl scored his NHL-leading seventh goal of the season 55 seconds into the game Saturday night against Ottawa but he was injured with just over two minutes left in the second period in a collision with Clarke MacArthur and immediately left the ice.

Hertl was bent over with his head down battling for a puck when he and MacArthur collided. He was still being evaluated by the medical staff when the third period began and his return was called questionable.