Coach Mike Shanahan has already whiffed on three in his two seasons in Washington, with Donovan McNabb, RexGrossman and John Beck combining to produce an 11-21 record.
Seven of those QBs were drafted since 2008, and it should be noted that Orton took the starting role only after a preseason injury to RexGrossman while Carr was drafted as the first ever quarterback of the then-new Houston Texans franchise.