Buffalo Bills quarterback Tyrod Taylor is in the concussion protocol after being taken to the locker room during the first quarter of Saturday's preseason game in Baltimore, the team announced.
Taylor was later ruled out for the game with a concussion.
Taylor appeared to fall hard on the back of his head on a third-down sack by Baltimore Ravens linebacker Matthew Judon. Taylor remained on the ground for several moments before coming to his feet and being met by trainers on the field.
Rookie quarterback Nathan Peterman replaced Taylor on the next possession, the Bills' third of the game.