Gable Steveson called ungrateful loser' by Daniel Cormier for his reaction after UFC 331 upset

This past Saturday, the premier MMA promotion returned to Los Angeles, California, for UFC 331 .

On the undercard, Gable Steveson competed in just his second UFC outing when he took on 0-2 heavyweight, Sean Sharaf .

And despite going into his fight as a huge favorite, Steveson was shockingly knocked out cold in just 12 seconds , in one of the biggest upsets in MMA history.