Bills add Bush to backfield

PITTSFORD, N.Y.— The Buffalo Bills signed free-agent running back Reggie Bush to a one-year contract to add veteran depth behind starter LeSean McCoy and fill a big hole in their return game. “We are always looking to improve our roster,” GM Doug Whaley said. “We had targeted Reggie because we feel a player of his calibre can help us in a variety of areas.” Bush is a 10-year NFL veteran who played five games with San Francisco last year before suffering a season-ending left knee injury. When healthy, Bush is a dynamic threat. He’s topped 1,000 yards rushing twice, most recently in 2013.