The worst-case scenario might be happening for the resurgent Cleveland Browns. Quarterback Brian Hoyer left the game against the Bills on Thursday after suffering a knee injury in the first quarter. The Browns are checking Hoyer out and his return is questionable.

Hoyer scrambled for 11-yards on a second-and-9 play that ended with an awkward slide. Hoyer's right knee got caught under his body and it help that he took a pretty hard hit from Bills linebacker Kiko Alonso.

The Browns backup is Brandon Weeden and he entered the game with 11:13 left in the first quarter.

Cleveland has been on fire since Hoyer took over as the team's starter in Week 3. The Browns have averaged 24 points per game since Hoyer took over as starter. Under Weeden the Browns only averaged eight points per game.

Hoyer has thrown for 590 yards and five touchdowns in Browns wins over Minnesota and Cincinnati. Hoyer was given the starting job after Weeden injured his thumb late in the game during Cleveland's Week 2 loss to Baltimore.