The search for a replacement opponent for Charles Oliveira for UFC Rio has dominated headlines this week. Rafael Fiziev‘s injury has left ‘Do Bronx’ without a fight, and there has been much speculation about who could step in with less than three weeks’ notice. Fans have seen names floated publicly, only for Oliveira to reveal many quietly declined behind the scenes. But now, Chael Sonnen might have finally offered Dana White the answer to this UFC Rio problem.
Among the offers, Mateusz Gamrot has been the most vocal, declaring he is ready to fight Oliveira despite having no full camp. ‘Gamer’ even addressed the Brazilian directly, tweeting that he was already at American Top Team and ready to go, emphasizing that “no excuses” should prevent a matchup.
Despite this, Oliveira remains cautious, emphasizing that publicly promoted offers frequently fail when the UFC makes the decision, citing factors such as weight cuts or minor injuries. But now, Dana White appears to have been given a solution that will suit both ‘Do Bronx’ and the promotion: Renato Moicano.
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On his YouTube channel, Chael Sonnen claimed that ‘Money’ would be an excellent matchup, framing the fight as a chance for Charles Oliveira to headline in front of his home fans without causing unnecessary friction. “I want to try to solve this problem. I want to make a push in whatever way that I can, but the answer to this riddle is Money Moicano. I am extremely confident when I tell you that Charles will give that opportunity to Moicano,” he said.
‘The American Gangster’ stated that Oliveira “does not care who his opponent is” as much as he cares about competing on this card. “Charles Oliveira does not care who his opponent is. And not because he comes from an era of “I’m just so confident I can take on anybody.” I believe he really wants to compete on this card.”
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So, Chael Sonnen believes that Moicano’s willingness to enter under the rules and weight class might answer the ongoing riddle. Moicano, a seasoned lightweight, meets the requirements for a credible opponent while remaining available on short notice. His previous UFC performances prove that he can handle top-tier opponents, and he apparently has no hesitation about accepting the fight against Oliveira at 155 pounds.
With Benoit Saint-Denis out of the equation when his manager declared him unavailable, Moicano’s name has gathered traction as the most likely and safe option for Dana White to keep the Rio card alive. But what about Mateusz Gamrot? The number 8-ranked fighter also expressed his wish to face Oliveira. So, why isn’t he being chosen?
Charles Oliveira refuses to face Mateusz Gamrot
Despite Mateusz Gamrot’s eagerness to step in, Charles Oliveira has drawn a firm line, indicating that a quick style change is not an option. The Polish lightweight’s wrestling-heavy style contrasts strongly with Oliveira’s striking-focused game, which he has spent weeks developing, and the former champion is unwilling to throw all of that training away.
The decision isn’t about avoiding Gamrot; it’s about strategy, timing, and making sure he performs well in front of his home audience. Charles Oliveira’s reasoning highlights the challenges of last-minute matchmaking in MMA. While Gamrot was quick to travel and declare himself ready, ‘Do Bronx’ stressed that adjusting his training camp on such short notice would jeopardize both performance and safety.
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“I was focused on a guy who comes from a striking background,” he said. “With two weeks left until the fight, I have to change my whole game plan. It’s very complicated.” This is not a criticism on Gamrot, but rather a reflection of Oliveira’s professional approach to fight preparation. With the clock ticking, the UFC must carefully consider its options.
Gamrot’s enthusiasm contrasts with Oliveira’s caution, leaving fans wondering who will eventually enter the cage. Charles Oliveira remains dedicated to headlining UFC Rio, but only under conditions that honor his training, style, and the fight’s integrity. His refusal to face Gamrot adds another layer of drama to an already unpredictable lead-up to one of Brazil’s most anticipated MMA nights.