Browns quarterback Brian Hoyer was forced to leave Thursday's game against the Bills during the team's second drive, after going down with an awkward looking knee injury.
Hoyer scrambled for a first down, and was hit while attempting to slide. Both knees appeared to get caught under him, and he was immediately helped off the field. Hoyer would walk to the locker room under his own power, but his return is questionable.
Brandon Weeden replaced Hoyer at quarterback in his first game back from a thumb injury.