Kevin Williams (knee) out for Week 1

EDEN PRAIRIE, Minn. -- Vikings defensive tackle Kevin Williams will miss the team's game Sunday in Detroit as he continues to recover from a hyperextended right knee, coach Leslie Frazier said Friday.

Williams has missed only four games in his career, and two of them were for a suspension in 2011. The 32-year-old said he expects to be back Week 2 to play against the Bears in Chicago, and added he could have played Sunday if he were absolutely needed. But it being the first week of the season, the Vikings opted to err on the side of caution.

"I could probably play this week, but what's the point in doing that and missing four more after?" Williams said.

Without Williams, the Vikings likely will rely on a rotation at defensive tackle. Rookie Sharrif Floyd has recovered from minor knee surgery that caused him to miss the Vikings' last two preseason games, and he will see plenty of time Sunday. However, Frazier would not go so far as to say Floyd will start or play the majority of the game. Nose tackles Letroy Guion and Fred Evans also could see snaps at the three-technique spot where Williams has earned six Pro Bowl selections.

"We're going to make that decision, as we talk about our depth chart tonight and tomorrow," Frazier said. "It'll be a mix. Kevin has been a cornerstone at that position, but the other guys are going to step up and play well."

Williams, who was initially injured on a low block by San Francisco's Joe Looney on Aug. 25, said he still hasn't heard from the 49ers' offensive tackle.

"He said [to the media] he wasn't trying to [injure me]. He said what he said," Williams said. "He could have hit me high."