17. Russell Westbrook's NBA Finals Game 4 Foul
Russell Westbrook showed his inexperience and youthfulness time and time again last season, but perhaps no more than in this moment. When you're down three with 17 seconds left and a jump ball coming, you're immediate thought cannot be to foul a dude when he's running out of room on the perimeter. Apparently, nobody told that to Westbrook. He committed a head-scratching foul, and gave up any shot the Thunder had at winning game 4 and evening up the series. Miami won the game, took a 3-1 lead, and never looked back.