Washington Redskins running back Chris Thompson (35) rushes the ball past Buffalo Bills defenders in the second half of an NFL preseason football game Saturday, Aug. 24, 2013, in Landover, Md. (AP Photo/Nick Wass)
New York Jets quarterback Mark Sanchez leaves the field after being injured during the second half of a preseason NFL football game against the New York Giants, Saturday, Aug. 24, 2013, in East Rutherford, N.J. (AP Photo/Julio Cortez)
Washington Redskins running back Chris Thompson (35) rushes the ball past Buffalo Bills defenders in the second half of an NFL preseason football game Saturday, Aug. 24, 2013, in Landover, Md. (AP Photo/Nick Wass)
Washington Redskins wide receiver Santana Moss (89) rushes for 45 yards in the first half of an NFL preseason football game against the Buffalo Bills Saturday, Aug. 24, 2013, in Landover, Md. (AP Photo/Richard Lipski)
Arizona Cardinals running back Rashard Mendenhall (28) during the second half of a preseason NFL football game against the Dallas Cowboys, Saturday, Aug. 17, 2013, in Glendale, Ariz. The Cardinals won 12-7. (AP Photo/Rick Scuteri)
Tennessee Titans running back Shonn Greene (23) scores a touchdown on a 19-yard touchdown run as Washington Redskins defender Bacarri Rambo (29) tries to bring him down in the first quarter of a preseason NFL football game on Thursday, Aug. 8, 2013, in Nashville, Tenn. (AP Photo/Wade Payne)
Houston Texans Arian Foster, left, and Ben Tate (44) talk on the sidelines during the second half of a preseason NFL football game against the Miami Dolphins Saturday, Aug. 17, 2013, in Houston. (AP Photo/Patric Schneider)