It's rare that two devastating knockouts happen on the same weekend. On Friday night at Bellator 139 Hisaki Kato knocked out Joe Schilling with an amazing left handed Superman punch. Then on Saturday night at UFC Fight Night 70, Thiago Santos took on Steve Bosse and just 29 seconds into the first round, Santos landed a massive head kick that knocked Bosse completely out cold.

Let the debate begin on which knockout is better.