16. Justin Blackmon
Blackmon is one of the most frustrating figures on this list. The Jaguars selected him in the first round of the 2012 NFL Draft with the fifth-overall pick. They put a lot of faith in him after his performances for OSU. But he was a massive bust because of his off-field issues. Few athletes over the last decade had as many problems with alcohol and drugs (via Orlando Sentinel).

He had two DUI arrests and a suspension before he even stepped onto the field in teal. But that wasn’t the end of the matter because Blackmon didn’t learn the error of his ways. He racked up DUI arrests and abused drugs until the Jaguars gave up on him. On paper, Blackmon was the best receiver in his class. Sadly, things didn’t work out the way fans expected for this highly promising receiver.