"All doubts seemed to disappear Wednesday that Matt Cassel would start at quarterback Sunday when they open their regular season against Buffalo at Arrowhead Stadium.

The Chiefs returned to practice after a day off and Cassel was a full participant.

"No doubt in my mind," Cassel said when asked if he would play. "I feel good. I feel like I'm ready to go.

"Come you-know-what or high water, I'm going to be out there.""