VIDEO: Remembering Anderson Silva's Amazing Front Kick KO of Vitor Belfort

April 14 marks the 45th birthday of UFC and mixed martial arts legend Anderson Silva, who might just be the single greatest athlete in the history of the sport. So what better way than to look back at perhaps his most showstopping knockout? Back at UFC 126 in February 2011, Silva defended his middleweight championship against former light heavyweight champion Vitor Belfort, who was riding a five-match winning streak. That made no difference for Silva, as just three minutes into the first round, he unleashed a nasty front kick out of nowhere that connected with Belfort's chin and sent him to the deck. A flurry of ground and pound punches was then all it took to secure the TKO victory.

Pure viciousness from Spider, who secured arguably the best knockout in combat sports history at the expense of his Brazilian countryman.

The win against "the Phenom" extended Silva's winning streak to 14 fights, and he went onto win three more bouts before stunningly dropping the middleweight title to Chris Weidman at UFC 162.

It's a bit disheartening to see Silva still out there past his primee years, but he provided plenty of mixed martial arts fans with great memories while solidifying himself as one of the best ever in the pound-for-pound conversation.

Happy Birthday to the Spider, 45 years young.