2. Robert Griffin III
Poor Griffin. His career is ongoing but there’s no doubt that it has never recovered from the traumatic ending to his rookie year. A revelation with the Washington Redskins, he won the NFL Offensive Rookie of the Year award to cap a brilliant season. But then the record-breaker tore ligaments in his knee.
In sum, the decline was immediate. Despite significant rehabilitation, Griffin was a ghost of his former self. Instead of becoming a franchise quarterback as the Redskins expected, he has drifted around the league as a back-up quarterback. Finally, he serves as a warning to all young quarterbacks how quickly things can change.