LB Mitchell carted off with leg injury

ORCHARD PARK, N.Y. (AP) -Bills coach Dick Jauron is concerned about the severity of the leg injuries sustained by linebackers Kawika Mitchell and Marcus Buggs that further deplete Buffalo's already banged-up defense. ``I'm not optimistic about those injuries,'' Jauron said after both were hurt in a 6-3 loss to Cleveland on Sunday. ``We'll find out more tomorrow and, clearly, we'll have to do something if those turn out to be serious.''