Alex Gibbs resigns just prior to season

SEATTLE -- A week before their season begins, the Seattle Seahawks are breaking in a new offensive line coach after the sudden retirement of Alex Gibbs.

The veteran coach known for his success with zone blocking schemes stepped down on Saturday, just eight days before the Seahawks season opener against San Francisco.

A team spokesman says the 69-year-old Gibbs was "worn out."

The Seahawks hired Pat Ruel as Gibbs replacement. Ruel was the offensive line coach at USC under Carroll, but was not retained by Lane Kiffin. He has also coached in the NFL.

Gibbs was considered one of coach Pete Carroll's key hires as he assembled his staff in the offseason. Gibbs was hired away from Houston, where he was an assistant coach with the Texans for two seasons. Gibbs won two Super Bowl rings as an assistant in Denver in the late 1990s. Gibbs spent 13 total seasons in Denver.

Information from The Associated Press contributed to this story.