This past Saturday in the main card opener at UFC 313, we saw a big time lightweight prospect face his toughest challenger to date. The exciting Mauricio Ruffy (12-1) was looking to move to 3-0 inside the octagon as he took on King Green (32-17-1).

After arguably one of the most vicious knockouts in UFC history, Mauricio Ruffy knows exactly what he wants next. Ruffy (12-1 MMA, 3-0 UFC) landed a spinning heel kick on King Green (32-17-1 MMA, 13-12-1 UFC) a little more than two minutes into their main

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.

Beneil Dariush is open to fighting Mauricio Ruffy after the Brazilian got a highlight-reel KO win at UFC 313 on Saturday.

Mauricio Ruffy's emphatic knockout victory at UFC 313 positions him as a rising contender in the lightweight division. After defeating King Green, Ruf

Check out the best photos from Mauricio Ruffy's first-round knockout win over King Green at UFC 313 at T-Mobile Arena in Las Vegas. (Photos by Stephen R. Sylvanie, USA Today Sports; MMA Junkie; UFC) mauricio-ruffy-ufc-313-official-weigh-ins king-green-ufc-313-official-weigh-ins mauricio-ruffy-ufc-313-ceremonial-weigh-ins king-green-ufc-313-ceremonial-weigh-ins king-green-vs-mauricio-ruffy-ufc-313-ceremonial-weigh-ins-faceoff MMA: UFC 313 - Las Vegas-Green vs Ruffy MMA: UFC 313 - Las Vegas-Green vs Ruffy Mauricio Ruffy def.

The Brazilian star continued his rise up the lightweight rankings after scoring a sensational knockout over the American MMA veteran at UFC 313