‘The Bills practiced without pads for the first time since the ramp-up period to begin training camp. That didn’t prevent defensive back Cam Lewis from taking a hard hit. The fourth-year player from University at Buffalo went down after contesting a deep pass to Trent Sherfield. Teammates immediately called for trainers after it appeared Lewis hit his head on the grass turf, and some knelt while Lewis laid on his back. After a few minutes, Lewis was able to get up and walk to the sideline medical tent. … Linebacker Matt Milano and nickel defender Taron Johnson returned after missing the stadium practice because of general soreness. Oliver also practiced fully after an early exit Friday night.’