Mauricio Ruffy has made himself available to be the backup fighter for the main event of UFC 329.Ruffy, ranked No. 10 in the UFC lightweight division, is on his way to Las Vegas, ready to pounce should anything happen to either Conor McGregor or Max Holloway, who are headlining the show. Ruffy knocked out Michael Chandler at the UFC’s White House event on June 14 and has cut his recovery period short in case he’s needed for the UFC 329 main eventGettyFor McGregor, it marks a returns to MMA for the first time in more than five years.The 37-year-old broke his leg in his last appearance, against Dustin Poirier, and faces Holloway for the second time in his career – 13 years after he outpointed ‘Blessed’ at UFC Boston.McGregor was meant to end his hiatus from the sport at UFC 303 in 2024 against Michael Chandler but withdrew from the bout on short notice after injuring his toe.The fight was scrapped from the bill altogether, and Ruffy wants to ensure there are no repeats ahead of UFC 329.Ruffy ready for warIn a video on his social media accounts, Ruffy, who knocked out Chandler at UFC White House last month, explained that he has cut his holiday short in case a main event replacement is needed.“I’ve made myself available for the Conor McGregor-Max Holloway fight,” Ruffy said, translated from Portuguese to English.“I’m heading to Las Vegas now, let’s see what happens. I took good care of myself. These guys made me train in the middle of my vacation.”The Brazilian then showed his current weight to be at 84kg (185lbs), meaning he would only need to cut 7kg (15lbs) to step in for either McGregor or Holloway.The UFC 329 main event is being contested in the welterweight division (170lbs) – a stipulation McGregor believes greatly favours him.Holloway, on the flip side, has no issues with competing at 170lbs for the first time in his legendary career.Ruffy has often been compared to McGregor in his career due to his similar flashy fighting styleGettyMcGregor vs Holloway headlines a star-studded UFC 329 card this weekend in Las VegasGettyAs for Ruffy, who has often been compared to McGregor in his career, he fancies his chances against either man should he get the late call.“Me against Conor McGregor, I believe it would be a very good fight,” the 30-year-old added.“But I believe it would be a really cool fight against Max Holloway. I believe in my knockout power.“He’s a guy who doesn’t seek to play forward there all the time, but I go there to finish the fights and I don’t miss my opportunities.“It would be really cool to see this fight happen. I’m going. Let’s see what happens.”Ruffy boasts an impressive professional MMA record of 14-2, having punched his ticket to the UFC through Dana White‘s Contender Series in 2023.He has lost once in the UFC to Benoit Saint Denis, who takes on Paddy Pimblett in the co-main event of UFC 329.Ruffy has bagged three Performance of the Night bonuses in his five UFC victories, with his knockout of King Green in March 2025 one of the greatest in promotional history.