Generations will clash in Austin, Texas when 2015 ADC champ Rodolfo Vieira and 2019 ADCC champ Kaynan Duarte meet at Who's Number One (WNO). The event will feature six no-gi matches, all 15 minutes in length and under WNO submission only rules. As always, the best in the world will collide on the WNO mat, establishing who is truly number one in the no-gi scene today. Watch the clash of ADCC champions, Kaynan Duarte vs Rodolfo Vieira at Who's Number One on December 11th on FloGrappling!