Minnesota Vikings running back Dalvin Cook (33) fumbles the ball as he is tackled by 49ers linebacker Fred Warner, right, Sunday in Minneapolis.
Minnesota Vikings running back Dalvin Cook (33) fumbles the ball as he is tackled by 49ers linebacker Fred Warner, right, Sunday in Minneapolis. Jim Mone AP
Minnesota Vikings running back Dalvin Cook (33) fumbles the ball as he is tackled by 49ers linebacker Fred Warner, right, Sunday in Minneapolis. Jim Mone AP