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Mickey Slaughter played for the Broncos from 1963 until 1966, chalking up a completion percentage of 49.8 and a per pass average of 6.2 yards. Impressive.
With the departure of Jay Cutler and the arrival of former Chicago Bears signal caller Kyle Orton, the Denver Broncos may be returning to the sort of lackluster quarterbacking that marked the team's darkest eras. Many of these QBs have been forgotten over time, while the lameness of others is forever tattooed on our brains. Here's a refresher course on ten of the least successful hurlers to stick their hands between a Broncos center's legs. Captions by Michael Roberts.