There has been a major shakeup for this Friday's WNO 31: Pena vs Griffith - with the highly anticipated lightweight title fight between Diego “Pato” Oliveira and Deandre Corbe off due to illness, we are bringing you a fresh replacement bout as Oliver Taza faces off with Chris Wojcik in the middleweight division.

Get a quick rundown of everything happening in Brazilian jiu-jitsu in just a few minutes

The WNO heavyweight title is on the line once again for a juggernaut of a matchup between Felipe Pena and Luke Griffith!

WNO 31 is shaping up to be one of the most compelling cards of the year, packed with title matches, high-stakes rematches, and ranked contenders facing off in grappling super fight action. It's all going down in Round Rock, TX on December 5th and we’re breaking down the biggest storylines to watch out for and keep in mind before the athletes step on the mat.

Two of the toughest guys in the welterweight division will throw down at WNO 31 when Dante Leon faces off against Andy Murasaki. Both men are world-ranked, no-gi black belt world champions, and WNO veterans who train with some of the best teams in the world. The entire card, headlined by a heavyweight title bout and featuring seven main card matches, will be going down in Round Rock, TX on December 5th.

When Deandre Corbe and Diego Pato meet at WNO 31 for Pato's lightweight title, it will be the second time these two have met this year with high stakes. In June, they faced off in the semifinals of a major Sapateiro tournament that included most of the top 155lb grapplers on Earth. Corbe would pick up the win there and go on to win the entire tournament. Now, Pato gets his chance at revenge under his ruleset at WNO 31 in Round Rock, TX.

The legendary Xande Ribeiro returns to WNO when he takes on an unconventional challenger Jordan Preisinger, live on FloGrappling. Jordan is best known for his popular YouTube channel Jordan Teaches Jiu-Jitsu and now the Canadian will get to test himself against one of the best to ever do it in Ribeiro. The entire event will be streaming live exclusively on FloGrappling, going down in Round Rock, TX on December 5th.

Rising star Helena Crevar will make her first Who’s Number One featherweight title defense at WNO 31 when she puts her championship on the line against veteran Brazilian contender Julia Boscher, live on FloGrappling.

A heated rematch is set for WNO 31, as reigning champion Diego “Pato” Oliveira will defend his WNO Men’s Lightweight Championship against Standard BJJ's Deandre Corbe, live on FloGrappling. The two black belt world champions will face off in Round Rock, TX on December 5th at the Kalahari Events Center - tickets are available now.