Mayo joins defensive tackle Vince Wilfork on IR,Borussia Dortmund Fanshop. Wilfork tore his right Achilles tendon Sept. 29 in a 30-23 win over the Atlanta Falcons. He and Mayo are defensive co-captains.
After tackling Darren Sproles on Sunday, Mayo got up and reached for the upper right area of his chest. Mayo's agent, Mitch Frankel, did not respond to a request for comment on a report that Mayo had undergone surgery for a torn chest muscle. Rookie Jamie Collins, the Patriots' first-round draft choice, and Dane Fletcher are expected to fill in for Mayo, who has missed just five regular-season games.