‘Bills running back Antowain Smith, nursing a swollen right knee, will miss Saturday’s preseason game against the Detroit Lions. Smith, Buffalo’s No. 1 rusher, did not participate in any contract drills at training camp this past week in Rochester. He was hurt in last week’s preseason-opening victory against Cincinnati when he was struck by a helmet. Coach Wade Phillips, who insists the injury is to Smith’s thigh, said the running back will continue to have fluid drained from his leg and should be ready to return next week.’