Anthony Davis will miss his ninth game of the season and his fourth since sustaining a concussion after the right tackle was ruled out in advance of Sunday’s game in Seattle. The 49ers also will be without wide receiver Stevie Johnson, who was ruled out with a knee injury.
Davis suffered his concussion at the end of the team’s Nov. 16 win over the Giants. He was limited in practice this week but still was experiencing post-concussion symptoms.
“He’s in communication with the trainers and the doctors,” coach Jim Harbaugh said when asked how the 49ers will proceed with Davis. “The professionals are handling it.”
Davis missed the earlier matchup with the Seahawks as well. Jonathan Martin started in his place and will make his ninth start of the season Sunday.
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The team also could be without center Marcus Martin, who is listed as questionable. Martin injured his knee on Sunday and missed Wednesday’s practice. He was limited on Thursday and Friday, and Harbaugh said the 49ers were “still determining” his status for the Seahawks game. If he can’t play, Joe Looney is likely to fill in at center.
Johnson’s absence perhaps creates a bigger role for second-year receiver Quinton Patton, who leapfrogged veteran Brandon Lloyd on last week’s depth chart. Patton, who had been inactive for the 49ers’ previous 12 games, was targeted once in Sunday’s loss to the Raiders but did not have a reception.
Nose tackle Glenn Dorsey (arm) and linebacker NaVorro Bowman (knee) also have been ruled out. Cornerback Tramaine Brock (hamstring) went through light practices this week and is listed as questionable. But he is unlikely to play in Seattle.
Out: LB Navorro Bowman (knee), T Anthony Davis (concussion), DT Glenn Dorsey (forearm), WR Stevie Johnson (knee)
Questionable: CB Tramaine Brock (hamstring), CB Chris Culliver (knee), C Marcus Martin (knee), S Raymond Ventrone (groin)
Probable: G Mike Iupati (elbow), DE Ray McDonald (finger), DE Justin Smith (back)
Out: DE Demarcus Dobbs (ankle)
Doubtful: C Max Unger (knee, ankle)
Questionable: TE Cooper Helfet (ankle)
Probable: CB Jeremy Lane (glute), RB Marshawn Lynch (back)
Read Matt Barrows’ blogs and archives at www.sacbee.com/sf49ers.