ANALYSIS: The Patriots had two different "base" packages in the game depending on the Texans' personnel. The standard base personnel had rookie cornerback Ryan playing over Arrington in the No. 2 spot opposite Talib. The other base package had a third cornerback over a second safety, with Arrington coming on in place of Harmon/Gregory. The 18 snaps for Arrington, who has been playing through a groin injury, were easily a season low. ... Even with Gregory returning at safety for the first time since breaking his thumb Nov. 3, he was limited in his snaps, splitting time with Harmon, who started. ... Because the Patriots weren't in their sub defense as often as last week, linebackers Fletcher and Collins saw their snaps decline when compared to last week against the Broncos. ... Siliga made his debut after being promoted from the practice squad Wednesday and split time with Sopoaga at nose tackle in the base 3-4 alignment, with Vellano and Chris Jones at the ends. ... Safety Nate Ebner's two snaps came on the final plays of the game when the Patriots had seven defensive backs on the field. ... The 59 snaps were one shy of a season-low (58, vs. Carolina).