Coach Dennis Allen completed the Raiders' coaching staff by hiring Bob Sanders as his linebackers coach Friday.

Sanders spent the past four seasons with the Buffalo Bills, where he coached the defensive line one season and linebackers the final three.

Sanders has 33 years' coaching experience in college and the NFL. He also coached for the Green Bay Packers and Miami Dolphins, including a stint as Packers defensive coordinator in 2006-08.

Allen fired four coaches the day after the regular season ended -- offensive coordinator Greg Knapp, offensive line coach Frank Pollack, special teams coordinator Steve Hoffman and linebackers coach Johnny Holland.

Allen has hired Greg Olson to replace Knapp, Bobby April to take over for Hoffman and Tony Sparano as his new offensive line coach.

Pro Bowl: Minnesota rookie left tackle Matt Kalil was added to the NFC's roster to replace Washington tackle Trent Williams, who was hurt in a brawl at a Honolulu nightclub.

NFL officials and local police said Friday that Williams was hurt in a fight that injured three men, sending two to the hospital. Police say one man was arrested and five others are being investigated for assault, but not Williams.

The league said the third-year pro will be on the sideline for the Pro Bowl game Sunday.

Redskins teammate Jammal Brown said on Twitter that Williams needed seven stitches.

"Wasn't his fault. ... He did nothing wrong," Brown said.

The Pro Bowl appearance is marking something of a personal comeback for Williams, who was suspended four games in 2011 for testing positive multiple times for marijuana.

The Associated Press contributed to this report.