Washington Redskins head coach Mike Shanahan allowed No. 1 QB candidates John Beck and Rex Grossman to alternate every two series through the third quarter against the Baltimore Ravens on Thursday. Through three preseason games, however, nobody has run away with the opportunity yet. (AP Photo/Gail Burton)

Photo by: Gail Burton

Washington Redskins head coach Mike Shanahan allowed No. 1 QB candidates John Beck and Rex Grossman to alternate every two series through the third quarter against the Baltimore Ravens on Thursday. Through three preseason games, however, nobody has run away with the opportunity yet. (AP Photo/Gail Burton)