ST. LOUIS -- Vernon Davis, who has missed two of San Francisco's past three games due to injury, was active for the 49ers' Monday night 31-17 win at St. Louis.
Davis, who injured his lower left back against the Philadelphia Eagles on Sept. 28 and sat out last weekend's game against the Kansas City Chiefs, practiced in a limited capacity this past week and was questionable to play. He had three receptions for 30 yards against the Rams.
His nine receptions are fourth on the team, and his 91 receiving yards are fifth. He injured an ankle and knee in Week 3 at Arizona.
The 49ers' seven inactive players are: WR Quinton Patton, CB Tramaine Brock, S L.J. McCray, C Marcus Martin, RT Anthony Davis, DT Quinton Dial and DT Tank Carradine.
Perrish Cox will again start at cornerback for Brock, who has not played since the season opener, and Jonathan Martin will start in place of Anthony Davis for the fifth time this season.
The Rams' inactives are: WR Chris Givens, QB Case Keenum, CB Trumaine Johnson, CB Brandon McGee, RB Chase Reynolds, OL Barrett Jones and DT Alex Carrington.
No. 2 overall pick Greg Robinson will make his first NFL start for the Rams at left guard.