Ukrainian boxer Oleksandr Usyk (24-0, 15 KOs) etched his name in boxing history by becoming the first undisputed heavyweight champion in the four-belt era. He earned this title on July 19, 2025, by knocking out Britain's Daniel Dubois (22-3, 21 KOs) in a rematch at the legendary Wembley Stadium in London.

How the Rematch with Dubois Unfolded

From the start, Dubois attempted to pressure Usyk, using his size and targeting the body—mindful of the controversial low blow in their first fight. Usyk, however, controlled the ring, outpacing his opponent with precise punches and agile footwork. Initially, it seemed Dubois was dictating the fight, but Usyk turned the tide in the fifth round: first a knockdown, followed by a powerful punch to the jaw that sent Dubois to the canvas. The blow was so strong that Dubois's mouthguard fell out, resulting in a knockout victory and the historic unification of the titles.

Usyk's Titles

After his triumphant victory over Dubois at Wembley, Oleksandr Usyk unified all the major heavyweight division titles, becoming the undisputed world champion. As of July 2025, he holds the following championship belts:

• WBA Super — World Boxing Association (5th defense)
• WBO — World Boxing Organization (5th defense)
• IBF — International Boxing Federation (taken from Dubois)
• WBC — World Boxing Council (2nd defense)
• The Ring — The Ring magazine, symbolic lineal champion belt (4th defense)
• IBO — International Boxing Organization (not part of the "big four," but recognized in title fights)

Usyk's Recent Fights

On his path to undisputed championship, Oleksandr Usyk faced a series of key bouts against elite opponents. Below is a brief overview of his last six fights, each marking an important milestone in his legendary career:

• Daniel Dubois — London, Wembley, July 19, 2025. Victory by knockout in the 5th round. Usyk unified all heavyweight belts and became the undisputed champion.
• Tyson Fury — Riyadh, Kingdom Arena, December 21, 2024. Victory by unanimous decision (UD). Confident defense of all titles in the rematch.
• Tyson Fury — Riyadh, Kingdom Arena, May 18, 2024. Victory by split decision (SD). Usyk became the undisputed world heavyweight champion, claiming the WBC belt.
• Daniel Dubois — Wroclaw, Wroclaw Stadium, August 26, 2023. Victory by knockout in the 9th round. Title defense. Controversial low blow in the 5th round.
• Anthony Joshua — Jeddah, King Abdullah Sports City, August 20, 2022. Victory by split decision (SD). Usyk defended titles and won The Ring belt.
• Anthony Joshua — London, Tottenham Hotspur Stadium, September 25, 2021. Victory by unanimous decision (UD). Usyk claimed the WBA Super, WBO, IBF, and IBO titles.

Historical Achievement

The victory over Dubois solidified Oleksandr Usyk's status as one of the greatest boxers of the modern era. He became the first undisputed world heavyweight champion of the four-belt era and the only three-time undisputed world champion across two weight classes. 

Usyk first conquered the cruiserweight division, winning all the belts in 2018. He then became the undisputed champion in the heavyweight division twice—first after defeating Tyson Fury in May 2024, and then reaffirming his status in the rematch with Dubois in July 2025. 

Usyk and Video Games

Oleksandr Usyk is not only an undisputed world boxing champion but also an avid video game enthusiast. In interviews, he has repeatedly admitted to playing Counter-Strike 2, especially during training camps. 

Usyk respects esports: he has previously collaborated with WePlay Esports, received gaming PCs for his team, and even participated in organizing tournaments. Despite his active involvement in the promotional sphere, his favorite pastime remains CS2.

Usyk is also a key character in the modern boxing game Undisputed—the first full-fledged boxing simulator in the last decade. His digital likeness is recreated with high precision, which he takes pride in. The boxer enthusiastically discussed his involvement in the project and emphasized the importance of having a quality boxing game on the market. By the way, the game recently received a significant update, which you can learn about via this link.