Mauricio Ruffy may have locked up Knockout of the Year just two minutes into the UFC 313 main card. Ruffy scored a highlight-reel spinning kick to the head of King Green, sending him down and out to kick off Saturday's pay-per-view from T-Mobile Arena in Las Vegas.

Mauricio Ruffy opened the UFC 313 main card with a Knockout of the Year contender against King Green. Ruffy (12-1 MMA, 3-0 UFC) added to the octagon success of The Fighting Nerds when he uncorked a vicious spinning wheel kick that flatlined Green (32-17-1 MMA,

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