Bills (3-1) at Bengals (1-3)

TV: Sunday, 1, CBS (Tom McCarthy, Steve Beuerlein, Steve Tasker)

The matchup: It hasn’t taken first-year Bills coach Sean McDermott long to repair a defense that sagged under his predecessor Rex Ryan. Buffalo’s defense made its biggest statement of the season with a 23-17 victory at previously unbeaten Atlanta. The Bills are allowing an NFL-best 16 points per game, yielding only four TDs, including one through the air. McDermott is the first Bills coach to win three of his first four games since Kay Stephenson in 1983. Bengals QB Andy Dalton has had a revival in new offensive coordinator Bill Lazor’s up-tempo offense, which emphasizes getting rid of the ball quickly. In the two games since Lazor replaced fired Ken Zampese, Dalton has completed 81% of his passes for six TDs and no interceptions.