ANALYSIS: Devin McCourty, the team’s first-round pick, is a surprise performer at the top of the list. Entering training camp, there was a question of who would win the job at left cornerback – McCourty or Darius Butler? McCourty seized it. … Jerod Mayo is the only true three-down player in the front seven, coming off the field sparingly, if at all. … While Tully Banta-Cain hasn’t been playing as much in the base 3-4 defense, his playing time total remains high because of how often the Patriots are in sub packages. … Brandon Meriweather played 95 percent of the snaps last season, so his numbers are down this year. … Jermaine Cunningham’s progression of snaps looks like this – 26, 23, 28 and 53. If this is a sign of things to come, expect to see more of him on the field in the coming weeks. … Veteran defensive lineman Gerard Warren has been an early down player, coming off the field in passing situations. … Rookie inside linebacker Brandon Spikes and third-year inside linebacker Gary Guyton have combined to form one player – Spikes on early downs, Guyton in passing situations.