Sergio Wielzen is one of the most accomplished strikers in the world today, having won several titles, including a Lion Fight Lightweight World Championship, an It’s Showtime 61MAX World Championship, and two World Version W5 Championships.
Nicknamed “Samurai,” Wielzen was born in the South American former Dutch colony of Suriname, but his mother brought him to the Netherlands as a child in search of better opportunities. One day, Wielzen happened to see some athletes sparring in Muay Thai at a gym in the neighborhood, and was instantly hooked. He trained diligently, and made his professional debut in short order at the age of 16.
Wielzen hasn’t stopped competing ever since, amassing almost 50 wins with half of them coming via knockout to capture multiple title belts. This caught the attention of ONE Championship, and earned him a place in ONE Super Series alongside the world’s very best strikers. The stakes for his ONE debut couldn’t be any higher, as he will challenge for the inaugural ONE Super Series Flyweight Muay Thai World Championship. To this end, he is training daily alongside the likes of Regian Eersel and Lennart Blijd at the famed Sityodtong Amsterdam, and he looks to make his mark on the world with a spectacular world title-winning debut.