Steelers QB Ben Roethlisberger threw for 456 yards in Pittsburgh’s 39-30 loss to Seattle but left the game to go through concussion protocol once the game was out of reach.

Roethlisberger took a hit to the head early in the 4th quarter but kept playing which could lead to an investigation from the NFLPA on the handling of the situation.

Roethlisberger was 36/55 for 456 yards, 1 TD/ 2 Int’s in the loss.