San Francisco 49ers

49ers’ injuries: Jonathan Martin to start at tackle, Bruce Ellington back

Right tackle Anthony Davis has been ruled out of Sunday’s game against the Raiders due to lingering concussion symptoms, which will give Jonathan Martin his eighth start this season at the position. Davis worked out this week but has not practiced since suffering the concussion in the closing minutes of the team’s Nov. 16 game against the Giants.

Nose tackle Glenn Dorsey (arm) and tight end Vance McDonald (back) also have been ruled out. That means that for the second straight game, the 49ers’ tight ends will be Vernon Davis, Garrett Celek and undrafted rookie Asante Cleveland (Christian Brothers High). Cleveland did not play any offensive snaps in last Thursday’s loss to the Seahawks.

In addition, cornerback Tramaine Brock (hamstring) and special teams standout Bubba Ventrone (groin) are listed as questionable. Neither, however, practiced this week, which typically signals a player will not be on hand for Sunday.

In positive injury news, rookie receiver Bruce Ellington practiced all week after missing three games with an ankle injury. That means starting cornerback Perrish Cox no longer will have to return punts. Michael Crabtree also practiced every day despite the knee injury that slowed him during the Seahawks game.

49ers injuries

Out: T Anthony Davis (concussion), DT Glenn Dorsey (forearm), TE Vance McDonald (back)

Questionable: CB Tramaine Brock (hamstring), S Raymond Ventrone (groin)

Probable: WR Michael Crabtree (knee), CB Chris Culliver (shoulder), WR Bruce Ellington (ankle), RB Carlos Hyde (shoulder), WR Steve Johnson (knee), WR Brandon Lloyd (quadricep), DE Ray McDonald (finger), DE Justin Smith (back), T Joe Staley (illness)

Raiders injuries

Out: S Jonathan Dowling (back), TE Brian Leonhardt (concussion), T Menelik Watson (ankle, foot)

Questionable: CB Tarell Brown (foot), LB Sio Moore (hip), CB Neiko Thorpe (hand)

Probable: RB Latavius Murray (concussion)

Read Matt Barrows’ blogs and archives at www.sacbee.com/sf49ers.

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