Dallas Cowboys' Anthony Spencer (93) celebrates sacking Washington Redskins quarterback Robert Griffin III, not pictured, as tackle Tyler Polumbus (74) watches in the first half of an NFL football game, Thursday, Nov. 22, 2012, in Arlington, Texas. (AP Photo/Tim Sharp)

Photo by: Tim Sharp

Dallas Cowboys' Anthony Spencer (93) celebrates sacking Washington Redskins quarterback Robert Griffin III, not pictured, as tackle Tyler Polumbus (74) watches in the first half of an NFL football game, Thursday, Nov. 22, 2012, in Arlington, Texas. (AP Photo/Tim Sharp)