Tim Tebow, Denver Broncos, 2010
After one of the most decorated careers in college football history, the debate raged over whether Tim Tebow could be a viable NFL quarterback. Draft pundits insisted he should switch positions, and most people believed he wasn’t anywhere good enough of a passer to succeed in the league. Turns out, those people were right. After two seasons, the Broncos — who drafted Tebow late in the first round of the 2010 NFL Draft — dumped Tebow. Because of his poor play under center, and the sideshow his presence created, he was out of the league by 2015.