Washington Redskins quarterback Donovan McNabb pulls his helmet on in the tunnel before  an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Sept. 12, 2010.  (AP Photo/Evan Vucci)

Photo by: Evan Vucci

Washington Redskins quarterback Donovan McNabb pulls his helmet on in the tunnel before an NFL football game against the Dallas Cowboys in Landover, Md., on Sunday, Sept. 12, 2010. (AP Photo/Evan Vucci)