Kawhi Leonard, San Antonio Spurs
Without a shadow of a doubt, the biggest bust in fantasy hoops this year was Kawhi Leonard.
He had an ADP of 9.7, and all owners got for spending a first-round pick on him was nine mostly non-consecutive games and endless speculation about when he would return (if at all) and whether or not he was really hurt.
You can't really blame a guy for getting injured, but the saga surrounding his mysterious quad injury was excruciating for fantasy owners. You basically couldn't justify dropping him at any point because of the risk that he could return at any moment, but in hindsight, you would've been so much better off if you had just cut bait in the early going.
In the end, if you drafted Leonard this year, there's a good chance that you lost your league because of it.
Dishonorable Mention: John Wall (Washington Wizards), Mike Conley (Memphis Grizzlies), Isaiah Thomas (Cleveland Cavaliers/Los Angeles Lakers)