Photo Gallery - Kevin Williams

Minnesota Vikings defensive tackle Kevin Williams (93) asks for noise from the crowd during the Minnesota Vikings and Miami Dolphins NFL football game Sunday, September 19, 2010 in Minneapolis. (AP Photo/Andy Blenkush)

Minnesota Vikings defensive lineman Kevin Williams (93) defends during an NFL game against the Seattle Seahawks on Sunday, Nov. 17, 2013, in Seattle. The Seahawks won the game, 41-20. (AP Photo/Greg Trott)

Minnesota Vikings defensive tackle Kevin Williams (93) during an NFL football game Sunday, Sept. 26, 2010, in Minneapolis. (AP Photo/Jim Mone)

Oakland Raiders quarterback Carson Palmer (3) is sacked by Minnesota Vikings defensive tackle Kevin Williams during the second half of an NFL football game on Sunday, Nov. 20, 2011, in Minneapolis. (AP Photo/Andy King)

Detroit Lions quarterback Matthew Stafford (9) is stopped by Minnesota Vikings defensive tackle Kevin Williams (93) during the first quarter of an NFL football game in Detroit, Sunday, Dec. 11, 2011. (AP Photo/Rick Osentoski)

Minnesota Vikings defensive tackle Kevin Williams (93) looks up from the sideline with his helmet off during a NFL football game against the Seattle Seahawks, Sunday, November 17, 2013 in Seattle. The Seahawks won the game 41-20. (AP Photo/Paul Jasienski)

Minnesota Vikings defensive tackle Kevin Williams (93) lines up in a three-point stance during an NFL game against the Seattle Seahawks on November 17, 2013. The Seahawks defeated the Vikings 41-20. (AP Photo/Kevin Terrell)

San Francisco 49ers running back Frank Gore (21) gains yardage as Minnesota Vikings defensive tackle Kevin Williams (93) defends during the second half of an NFL football game Sunday, Sept. 23, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Minnesota Vikings defensive tackle Kevin Williams (93) yells out in celebration after a defensive stop during the NFL week 10 football game against the Washington Redskins on Thursday, Nov. 7, 2013 in Minneapolis. The Vikings won the game 34-27. (AP Photo/Paul Spinelli)

Minnesota Vikings defensive end Jared Allen (69), defensive tackle Kevin Williams (93), and outside linebacker Chad Greenway (52) walk on the field in the first half of an NFL football game against the Dallas Cowboys Sunday, Nov. 3, 2013, in Arlington, Texas. (AP Photo/Tim Sharp)

Minnesota Vikings defensive tackle Kevin Williams (93) on the line during an NFL football game between the Seattle Seahawks and the Minnesota Vikings in Seattle, WA Sunday, November 4, 2012. (AP Photo/Tom Hauck)

Minnesota Vikings defensive tackle Kevin Williams (93) celebrates on the sideline after sacking Arizona Cardinals quarterback John Skelton (19) in the second half of an NFL football game in Minneapolis, Sunday, Oct. 21, 2012. (AP Photo/Andy King)

Minnesota Vikings defensive tackle Kevin Williams (93) has a sideline laugh during the NFL preseason week 3 football game against the San Francisco 49ers on Sunday, Aug. 25, 2013 in San Francisco. The 49ers won the game 34-14. (AP Photo/Paul Spinelli)

Minnesota Vikings defensive tackle Kevin Williams (93) pressures Tennessee Titans quarterback Matt Hasselbeck (8) during the second half of an NFL football game Sunday, Oct. 7, 2012, in Minneapolis. The Vikings won 30-7. (AP Photo/Genevieve Ross)