Charles Oliveira, known as Do Bronx, made the lightweight division weight on Friday, October 10, 2025, during the official UFC Rio weigh-in, held at the event’s official hotel in Rio de Janeiro. The Brazilian hit 70.7 kg, the exact division limit, securing the main event against Polish fighter Mateusz Gamrot, who also weighed in at the same mark. The fight takes place tomorrow, October 11, at Farmasi Arena, marking the Ultimate’s return to Brazil with Oliveira as the star.
The matchup was confirmed after Rafael Fiziev’s injury, the original opponent, allowing Gamrot to step in on short notice.
The fighters posed for official photos without issues, signaling full preparation for the five-round bout.
Anticipation grows among local fans, eager for the former champion’s performance at home for the first time in years.
O homem está no peso! 🔥
— UFC Brasil (@UFCBrasil) October 10, 2025
70,7 Kg ⚖️ para o 🇧🇷 @CharlesdoBronxs na pesagem oficial do #UFCRio!
Sábado (11) | 17h | Assista ao vivo no @UFCFightPassBR | Aproveite o plano trimestral com desconto no link do perfil 🔗 pic.twitter.com/TNrYFktJB4
Oliveira’s recent record boosts Rio focus
Oliveira has 35 career wins, 23 in the UFC, standing out for records in submissions and title defenses. His last fight ended in a knockout loss, but the Brazilian responded with intense training for this return.
Gamrot, meanwhile, comes off a unanimous decision win over Ludovit Klein, extending his streak to four victories in his last five fights. The Pole, ranked in the lightweight top 10, aims for an upset on enemy turf.
Main card on track
Deiveson Figueiredo, former flyweight champion, hit 61.6 kg to face Montel Jackson in the co-main event, also in the bantamweight division. Vicente Luque and Joel Alvarez weighed in at 77.1 kg and 77.5 kg, respectively, confirming their welterweight clash.
Other highlights include Jhonata Diniz at 116.5 kg against Mario Pinto, and Ricardo Ramos at 66.2 kg versus Kaan Ofli.
Preliminaries with minor adjustments
- Jafel Filho and Clayton Carpenter: both at 57.1 kg, in the flyweight division.
- Vitor Petrino at 113.4 kg and Thomas Petersen at 114.8 kg, in the heavyweight division.
- Bia Mesquita at 61.6 kg versus Irina Alekseeva at 61.4 kg, in the women’s bantamweight.
The preliminary card continues with Lucas Rocha and Stewart Nicoll in flyweight, both at 57.1 kg, and Julia Polastri versus Karolina Kowalkiewicz in strawweight, at 52.6 kg each.
Sole weigh-in miss impacts purse
Saimon Oliveira exceeded the bantamweight limit by 3.6 kg, weighing in at 65.3 kg against the allowed 61.7 kg. The fight with Luan Lacerda, who hit 61.6 kg, remains confirmed, but Oliveira will forfeit a percentage of his purse.
UFC officials imposed the standard penalty, typical in isolated cases.
Walker’s case highlights setbacks
Valter Walker attended the weigh-in and hit his heavyweight mark, despite the cancellation of his bout with Mohammed Usman due to the opponent’s injury. The Brazilian expressed willingness to take a last-minute replacement, but the card remains at 12 fights.
Walker trained for months for the event, emphasizing his need to compete.
Arena event expectations
Farmasi Arena hosts the UFC for the third consecutive time, with gates opening at 5 p.m. Brasília time. The main card starts at 7 p.m., broadcast live.
Oliveira, 35, faces Gamrot, 34, in a matchup testing high-level grappling and striking.
Lightweight bout details
Oliveira holds 20 UFC submissions, surpassing any other fighter. Gamrot impresses with precise takedowns, averaging 4.5 per fight in recent wins.
Initial odds show a close fight, with Oliveira slightly favored at -125.
