SANTA CLARA — Nose tackle Ian Williams is slated to undergo surgery Monday for a broken ankle he suffered against the Seattle Seahawks, 49ers coach Jim Harbaugh said.
"It looks like he'll be out for the year," Harbaugh said of Williams at the start of his weekly news conference.
Williams suffered the injury Sunday night in the first quarter of the 49ers 29-3 loss to the Seahawks. Seattle's J.R. Sweezy cut block Williams while he was engaged with another offensive lineman.
Veteran Glenn Dorsey moves into Williams' starting spot for now. Harbaugh said the 49ers are exploring options on ways to add depth at that position.
"He played well," Harbaugh said of Dorsey's performance Sunday. "He had a lot of good snaps."
In other news, free safety Eric Reid is in the process of going through the league-mandated protocol for players that suffered a concussion, as was the case with Reid on Sunday night.
"The good news is, he's not symptomatic today," Harbaugh said of Reid.
Reid can't return to practice or play in a game again until he passes a series of tests.
Tight end Vernon Davis, who suffered a hamstring injury Sunday night, will be examined today to determine the extent of his injury, Harbaugh said.