Las Vegas Raiders running back Alexander Mattison (ankle) is questionable to play against the Kansas City Chiefs on Friday. He has been limited in practice all week long. Mattison missed last Sunday's game against the Denver Broncos, but his ability to practice in a limited capacity this week does leave the door open for him to suit up against the Chiefs. Fellow running back Zamir White (quadricep) has already been ruled out, so Mattison would essentially have the backfield all to himself if ...