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.

The first two fights scheduled for the pay-per-view include a pair of veterans in women’s strawweight Amanda Lemos and lightweight King Green. Up-and-coming Brazilian striker Mauricio Ruffy takes on Green, while 23-year-old Iasmin Lucindo looks for the biggest win of her career against Lemos.

UFC 313 has already gotten off to a huge start, as there have been plenty of finishes in the prelims. However, the main card opened up with a lightweight bout between Mauricio Ruffy and King Green. Ruffy and Green were going after one another in the first round,

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,

Kicking off the main card tonight at UFC 313 is a fight that promises to produce fireworks. The always entertaining King Green (32-16-1)