NT Fred Evans (knee) missed the past two games and was listed as questionable Friday. If he's out Sunday, it could also mean more snaps at nose for Williams.
NT Letroy Guion (chest/knee) has been ruled out against Seattle.
CB Chris Cook (hamstring) is probable.
QB Christian Ponder will likely start Sunday against the Seattle Seahawks, coach Leslie Frazier announced Friday.
TE Rhett Ellison has missed the past three games and four on the season. He has a high ankle sprain and is listed as questionable. The Vikings are hoping to get him back because they'll need help at the position with Rudolph out for about a month or longer.
RT Phil Loadholt (concussion) is listed as probable to play in Seattle.
LG Charlie Johnson (elbow) is listed as probable.