Washington Redskins' Tim Hightower (25) is helped from the field after being injured during the third quarter of an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 23, 2011. (AP Photo/Bob Leverone)

Washington Redskins' Tim Hightower (25) is helped from the field after being injured during the third quarter of an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Oct. 23, 2011. (AP Photo/Bob Leverone)