Roaf wasn’t with the Chiefs when they reported for training camp on Thursday. Roaf told The Kansas City Star this morning by telephone that he had told president/general Carl Peterson and coach Herm Edwards of his plans weeks ago and even sent the Chiefs a letter declaring his intentions.

“I guess they want me to reconsider,” Roaf told The Star. “I’m solid on retiring and going back to school.”

Roaf, 36, was emphatic in the spring that he would play this season. But today he said lingering hamstring and knee trouble led to his decision.

Edwards said Thursday the Chiefs would use Jordan Black at left tackle and Kyle Turley at right tackle when practice begins this afternoon.

Roaf played 13 NFL seasons and made the Pro Bowl in all but two of them. Despite playing on only teams to reach the playoffs, Roaf will likely be selected for the Pro Football Hall of Fame.