Peterson time?

As expected, rookie running back Adrian Peterson did not participate in tonight's joint practice with the Kansas City Chiefs, but coach Brad Childress said there's a chance he could return for Saturday's rematch in River Falls, Wis.

"I'd like to see him go," Childress said. "He ran out here without much trouble. We'll see how he wakes up in the morning."

Childress said wide receiver Troy Williamson was held out of the Chiefs practice because of an infection in his left arm and that he also is a possibility for Saturday.

Except for a concussion to rookie wide receiver Chandler Williams, the Vikings apparently suffered no serious injuries.