03/24/2014 05:28 pm ET Updated Mar 24, 2014

Johnny Manziel Held His Own Dunk Contest (VIDEO)

Johnny Manziel recently held his own personal dunk contest. The former Heisman Trophy winner posted an Instagram video of him showing off some impressive dunks, including a 360 slam. He seems to have improved since this embarrassing missed layup during halftime of an NBA game.