Antonio “The Flash” Cesar steps up on ONE Fight Night 45, bringing an unbeaten streak and a road-tested pro resume to Bangkok

Antonio Cesar’s launch into ONE Championship momentum is about to be measured against a fighter with established credibility in the flyweight MMA conversation. Ahead of ONE Fight Night 45 in Bangkok, the Brazilian newcomer enters the matchup described by ONE Championship as the biggest leap of his young mixed martial arts career, after stacking eight consecutive wins and showing a capacity to finish at different points in fights.

Cesar, whose nickname “The Flash” appears in ONE’s promotional materials, is arriving with a 13-2 professional record and a streak that includes back-to-back submission finishes. According to ONE’s feature on him, he made his professional MMA debut on Oct. 30, 2021, more than two months before his 18th birthday, and he has continued to compete at a pace that is uncommon for fighters debuting that young.

That early schedule is central to how ONE frames Cesar as more than a raw prospect. The promotion notes that after an initial TKO win in his debut, his second pro appearance produced his first career defeat, but he still accumulated nine professional bouts before turning 20. By the time he steps into ONE’s global spotlight, Cesar is expected to be only 22, yet he has already logged 15 pro appearances and nearly five years of elite-level experience, including time fighting under pressure rather than easing into it.

Where Cesar fights out of also matters for how quickly he developed. ONE’s profile says he is from Manaus, Brazil, and represents Fight Academy JMF. The promotion highlights that his fast development came in part from that early, aggressive competition style, which has helped him build a working identity in the cage rather than simply stacking training without test runs.

His opponent, Lito Adiwang, brings a different kind of readiness. ONE’s announcement of the pairing says Adiwang, a Filipino fan favorite known as “Thunder Kid,” is shifting his momentum into the flyweight MMA division. The same report notes that Adiwang previously competed much of his ONE tenure at strawweight and then looked “virtually unstoppable” after leaving that weight class behind.

Adiwang’s return-to-action timeline adds context to why this bout carries weight for both fighters. ONE says Adiwang was initially scheduled to face Joshua Perreira, but he will instead meet Cesar at ONE Fight Night 45 on July 17. The matchup is positioned as a promotional debut in the flyweight MMA landscape for Adiwang’s current chapter, with ONE describing his flyweight MMA run as already producing decisive finishes.

For viewers trying to understand what Cesar must prove on Friday, the matchup is structured as a durability test as much as a skill test. With ONE emphasizing Cesar’s eight-fight winning streak, professional finishing history, and high-frequency fight activity as his key advantages, the flyweight clash against Adiwang becomes a check on whether that production translates against a veteran whose recent flyweight MMA results have been immediate.

What to watch next is how both men handle pace and range early. Cesar’s profile path suggests he is comfortable accelerating once he finds timing, while Adiwang’s recent fights, as described by ONE, point to explosive bursts and forward momentum. The winner will not only capture a key name in a competitive flyweight picture, but also report how quickly Cesar can move from promising newcomer to a division-level threat inside ONE Championship.

The event itself is staged at Lumpinee Stadium in Bangkok, and ONE’s release ties the card to Prime Video coverage in U.S. primetime, underscoring the global audience for this particular step-up bout.