Robert Mayer-USA TODAY Sports
Aaron Williams: A
After getting torched by Andy Dalton the previous week, the Bills secondary, as a whole, improved their play on Sunday.
Aaron Williams saw the most improvement and finished the game with six solo tackles, one pass defensed and one interception, which was in the Dolphins end zone. He would have received an "A+" if he was able to stay in the endzone for a touchback instead of being downed at the 1-yard line.
Stephon Gilmore: A-
Gilmore is still at a serious disadvantage with one hand being in a cast due to a wrist injury, but he had a solid game against the Dolphins.
He finished the game with five tackles and one pass defensed, and he didn't show as much rust as he did playing against the Bengals.
Jairus Byrd: A-
Like Gilmore, Byrd didn't show as much rust against the Dolphins as he did against the Bengals. Byrd finished with four solo tackles and looked much more comfortable in Mike Pettine's defense.
Leodis McKelvin: B-
McKelvin bounced back from his poor performance against the Bengals with a much better game against the Dolphins on Sunday.
He finished with two solo tackles, one for loss, and two passes defensed. With Gilmore back, McKelvin hasn't been asked to go up against the opposing team's best wide receiver, and this should help him moving forward.
Nickell Robey: A-
Robey didn't waste much time making the first big play of the game, as he had a pick-six early in the first quarter. The undrafted rookie made a great read to jump the pass and helped set the tone of this game.