In the wake of their most injury-riddled game of the season, the 49ers have shuffled their roster. With running back Frank Gore officially out for the season -- he was placed on injured reserve today -- with a fractured right hip, the team has elevated running back DeShawn Wynn to the active roster. Wynn, 27, entered the league in 2007. He saw his most extensive action that year when he started four games for the Packers.
The team also has promoted rookie safety Chris Maragos, who went undrafted out of Wisconsin, from the practice squad to the active roster. Maragos was on the 53-man roster earlier this year but never was activated for a game. The 49ers were impressed with Maragos' special teams ability during the preseason.
The team also placed receiver Dominique Zeigler on injured reserve after an MRI today showed he suffered a torn left ACL injury while playing on special teams last night. In addition, the 49ers waived kicker Shane Andrus, who filled in for Joe Nedney the last two games, meaning they can make one more addition to their active roster. Andrus made two out of four field goals in yesterday's win over Arizona. One kick was blocked.
The 49ers also will be reshuffling their practice squad. In addition to promoting Wynn and Maragos, the team released tackle Xavier Fulton from the practice squad. Look for them to sign an interior offensive lineman this week.
Singletary said that Brian Westbrook would be Gore's main replacement in the short term but that rookie Anthony Dixon would receive a significant number of snaps. He said the 49ers are wary of Westbrook's concussion history.
Singletary said that center Davis Baas (concussion), cornerback Will James (concussion) and linebacker Parys Haralson (ankle) are all day to day. If Baas can't play Sunday, Tony Wragge would start at center and Adam Snyder likely would be his backup. Travis LaBoy mostly filled in when Haralson left the game Monday.
-- Matt Barrows