I think I would convict for a charge of attempted murder, assuming the victim survives. Facts of the case:

1) Perp is black,
2) MMA is a martial art, he is trained and experienced enough to know what he was doing was lethal force. This wasn't drunk Cletus and Steve fucking around behind the bar and Cletus taking it a bit too far, this nigger knew!

I would want to see 10 years at least!