Mixed martial arts veteran Vitor Belfort made is final octagon performance over the weekend. Unfortunately, the fighter suffered the second front kick knockout loss of his career. Vitor Belfort went toe-to-toe with fellow former title holder and MMA veteran Lyoto Machida during the live UFC 224 pay-per-view on Saturday, May 12. Machida made short work of his opponent, earning a knockout victory over Belfort with a brutal front kick to the face. Former UFC middleweight champion Anderson Silva first knocked out Belfort with a brutal front kick back at UFC 126. Now fight fans can judge for themselves which fighter did it better. Check out a side by side comparison of the two knockout performances within the video above. For more MMA news click here.