Cage fighter Robbie Kennedy celebrates during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Callum Mullen walks to the cage with children during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Conor Hulme is examined by a medic following his fight during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Micah Naisbet during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Caroline Plumley in action during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage figher Charlie Metcalf during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

A cage fighter retrieves his gumshield during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage Fighter Robbie Kennedy reacts during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Andy Yeomans celebrates after victory during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Conor Hulme competes during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Callum Mullen in action during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Callum Mullen in held back from the crowd following a brawl after his victory during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighters Ryan McNally and Joe Ambler compete during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighters Ryan McNally and Joe Ambler compete during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Robbie Kennedy celebrates during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Cage fighter Callum Mullen in action during the Almighty Fighting MMA Championships at the Barnsley Metrodome in Barnsley, Britain, February 19, 2022. Picture taken February 19, 2022. REUTERS/Lee Smith 

Ilaz Zabelaj prepares to enter the cage ahead of his second professional fight at Fight Club Rush , in Vaesteras, Sweden March 6, 2021. Due to the coronavirus disease (COVID-19) pandemic restrictions only professional sports events are currently allowed. Many amateurs on the card turned pro to continue competing. REUTERS/Philip O'Connor 

Ilaz Zabelaj prepares to enter the cage ahead of his second professional fight at Fight Club Rush , in Vaesteras, Sweden March 6, 2021. Due to the coronavirus disease (COVID-19) pandemic restrictions only professional sports events are currently allowed. Many amateurs on the card turned pro to continue competing. REUTERS/Philip O'Connor 

An event worker cleans the cage during the Fight Club Rush event, in Vaesteras, Sweden March 6, 2021. Due to the coronavirus disease (COVID-19) pandemic restrictions only professional sports events are currently allowed. Many amateurs on the card turned pro to continue competing. REUTERS/Philip O'Connor 

Ultimate Fighting Championship - UFC 224 - Amanda Nunes vs Raquel Pennington - Jeunesse Arena, Rio de Janeiro, Brazil - May 12, 2018 Raquel Pennington of U.S leaves the cage with her fiancee Tecia Torres . REUTERS/Ricardo Moraes 

Ultimate Fighting Championship - UFC 224 - Amanda Nunes vs Raquel Pennington - Jeunesse Arena, Rio de Janeiro, Brazil - May 12, 2018 Raquel Pennington of U.S leaves the cage with her fiancee Tecia Torres . REUTERS/Ricardo Moraes 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Joseph Schooling speaks to media after the training session with Angela Lee and Christian Lee Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee in action with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee in action with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee and Christian Lee demonstrate mixed martial arts basics to Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Joseph Schooling (2nd R) receives a token of appreciation from ONE Championship Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee in action with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee in action with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee in action with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee shares a hug with Joseph Schooling Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Mixed Martial Arts - One Championship Media Day with Joseph Schooling - Evolve MMA Gym - 24/11/16 Angela Lee (C) poses for a photo with fans Mandatory Credit: Action Images / Yong Teck Lim Livepic EDITORIAL USE ONLY. 

Abdul Munir of India makes his way to the cage holding his country's flag during the Brave Combat Federation Mixed Martial Arts, to fight his opponent Masio Fullen of Mexico at Khalifa Sports City in Manama, Bahrain, September 23, 2016. REUTERS/Hamad I Mohammed 

Abdulkareem Selwady of Jordan carries his country's flag as he makes his way to the cage during the Brave Combat Federation Mixed Martial Arts, to fight his opponent Rami Aziz of Iraq at Khalifa Sports City in Manama, Bahrain, September 23, 2016. REUTERS/Hamad I Mohammed 

Mixed Martial Arts - One FC 42 - Impact Arena, Bangkok, Thailand - 27/5/16
ONE: KINGDOM OF CHAMPIONS Fight 2: Pongsiri Mitsatit makes his way to the ONE Championship cage
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Mixed Martial Arts - One FC 42 - Impact Arena, Bangkok, Thailand - 27/5/16
ONE: KINGDOM OF CHAMPIONS Fight 2: Thailand's Pongsiri Mitsatit prepares to make his debut in the ONE Championship cage against Ye Thway Ne
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Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem kicks Andrei Arlovski (R).REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem celebrates his victory over Andrei Arlovski. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem (top) hits Andrei Arlovski . REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem (top) hits Andrei Arlovski . REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem kicks Andrei Arlovski. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Alistair Overeem (top) hits Andrei Arlovski . REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Alistair Overeem v. Andrei Arlovski 8/5/16 - Andrei Arlovski hits Alistair Overeem. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Stefan Struve v. Bigfoot Silva 8/5/16 - Stefan Struve celebrates his victory over Bigfoot Silva. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Stefan Struve v. Bigfoot Silva 8/5/16 - Stefan Struve celebrates his victory over Bigfoot Silva. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Stefan Struve v. Bigfoot Silva 8/5/16 - Stefan Struve celebrates his victory over Bigfoot Silva. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Stefan Struve v. Bigfoot Silva 8/5/16 - Stefan Struve celebrates his victory over Bigfoot Silva. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Albert Tumenov v. Gunnar Nelson 8/5/16 - Gunnar Nelson chokes Albert Tumenov. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Germaine de Randamie v Anna Elmose - 8/5/16 - Germaine de Randamie kicks Anna Elmose. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Nikita Krylov v Francimar Barroso - 8/5/16 - Nikita Krylov (top) punches Francimar Barroso. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Germaine de Randamie v Anna Elmose - 8/5/16 - Germaine de Randamie celebrates after winning her fight. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Germaine de Randamie v Anna Elmose - 8/5/16 - Germaine de Randamie celebrates after winning her fight. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Karolina Kowalkiewicz v Heather Jo Clark - 8/5/16 - Karolina Kowalkiewicz (R) punches Heather Jo Clark. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Rustam Kabilov v Chris Wade - 8/5/16 - Rustam Kabilov in action against Chris Wade. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Rustam Khabilov v Chris Wade - 8/5/16 - Chris Wade kicks Rustam Kabilov. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Magnus Cedenblad v Garreth McLellan - 8/5/16 - Magnus Cedenblad kicks Garreth McLellan. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Magnus Cedenblad v Garreth McLellan - 8/5/16 - Magnus Cedenblad celebrates his win over Garreth McLellan. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Kyogi Horiguchi vs Neil Seery- 8/5/16 - Kyoji Horiguchi (L) punches Neil Seery. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Reza Madadi v Yan Cabral - 8/5/16 - Reza Madadi celebrates his victory over Yan Cabral. REUTERS/Michael Kooren 

Mixed Martial Arts - UFC Fight Night - Reza Madadi v Yan Cabral - 8/5/16 - Reza Madadi (R) punches Yan Cabral REUTERS/Michael Kooren 

Mixed Martial Arts - Ultimate Fighting Championship (UFC) Fight Night - Mens Heavyweight Bout - Arena Zagreb, Zagreb, Croatia - 10/4/16 - Junior Dos Santos celebrates his win over Ben Rothwell. REUTERS/Antonio Bronic