Washington Redskins quarterback Dovovan McNabb passes during the first half of an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Alex Brandon)

Washington Redskins tight end Chris Cooley is stopped by Buffalo Bills linebacker Andra Davis (54) and Buffalo Bills safety Donte Whitner during the first half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Alex Brandon)

Washington Redskins cheerleaders are introduced prior to the start of an NFL preseason football game between the Redskins and Buffalo Bills, Friday, Aug. 13, 2010, in Landover, Md. (AP Photo/Rob Carr)

Washington Redskins quarterback Donovan McNabb scrambles during the first half of an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Alex Brandon)

Washington Redskins linebacker London Fletcher tackles Buffalo Bills running back Marshawn Lynch during the first half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Alex Brandon)

Washington Redskins wide receiver Devin Thomas is pulled down by Buffalo Bills cornerback Leodis McKelvin during the first half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

A Washington Redskins cheerleader performs during the first half of an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Washington Redskins running back Keiland Williams (35) carries the ball across the goal line for a touchdown as Buffalo Bills tackle Marcus Stroud (99) tries to stop him during the first half of an NFL preseason football game the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Buffalo Bills wide receiver Steve Johnson is upended by Washington Redskins linebacker Perry Riley, left, and safety Reed Doughty, right, during the first half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Washington Redskins quarterback Donovan McNabb laughs as he sits on the bench during the first half of an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Washington Redskins head coach Mike Shanahan watches from the sidelines during the first half of an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Washington Redskins running back Ryan Torain pushed past Buffalo Bills running back Justise Hairston during the second half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Rob Carr)

Washington Redskins wide receiver Bobby Wade pushes off of Buffalo Bills safety Bryan Scott during the first half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. (AP Photo/Nick Wass)

Washington Redskins running back Keiland Williams runs for a touchdown past Buffalo Bills cornerback Dominique Harris during the second half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. Washington won 42 -17. (AP Photo/Alex Brandon)

Washington Redskins quarterback Donovan McNabb walks off the field after an NFL preseason football game against the Buffalo Bills in Landover, Md., on Friday, Aug. 13, 2010. Washington won 42 -17. (AP Photo/Alex Brandon)

Buffalo Bills running back Joique Bell runs for a touchdown past Washington Redskins cornerback Lendy Holmes during the second half of an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. Washington won 42 -17. (AP Photo/Alex Brandon)

Washington Redskins quarterback Donovan McNabb shakes hands with Buffalo Bills center Sean Allen after an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. Washington won 42 -17. (AP Photo/Alex Brandon)

Washington Redskins head coach Mike Shanahan, left, greets Buffalo Bills head coach Chan Gailey after an NFL preseason football game in Landover, Md., on Friday, Aug. 13, 2010. Washington won 42 -17. (AP Photo/Alex Brandon)