JaMarcus Russell
Nobody expects first overall draft picks to crash out of the NFL after three seasons. But that’s exactly what happened in Russell’s case. First, he held the Raiders to ransom and demanded a rookie record contract. The NFL changed the rules after this because it was so insane. Meanwhile, he never came close to earning a dime of his six-year, $68 million deal (via USA Today).

The former LSU star arrived with massive fanfare but he had zero work ethic. He showed incredible unprofessionalism over his short Raiders career as he ballooned in size. In the end, he finished bottom of all of the quarterback stat charts after a garbage fire of a season. Russell was one of two QB first-round draft picks in 2007 alongside Brady Quinn.