Patrios FS Steve Gregory (hip) practiced on a limited basis this week and is listed as questionable for Sunday's game against the Bills. Gregory, out since Week 4, was cleared to practice Wednesday but isn't a lock to return. ESPN Boston believes Gregory is more likely to play than SS Patrick Chung (shoulder, hamstring), who's also listed as questionable. DE Trevor Scott (hamstring) and LB Tracy White (foot) have officially been ruled out.