Washington Redskins defensive back Brandon Meriweather (31) is helped off the field after being injured in the first half of an NFL preseason football game against the Chicago Bears in Chicago, Saturday, Aug. 18, 2012. (AP Photo/Charles Rex Arbogast)

Photo by: Charles Rex Arbogast

Washington Redskins defensive back Brandon Meriweather (31) is helped off the field after being injured in the first half of an NFL preseason football game against the Chicago Bears in Chicago, Saturday, Aug. 18, 2012. (AP Photo/Charles Rex Arbogast)