Sergio Wielzen
| Sergio Wielzen | |
|---|---|
| Born |
November 1, 1987 Suriname |
| Other names | Kleintje (Little One) |
| Nationality |
 Surinamese Dutch
|
| Height | 1.70 m (5 ft 7 in) |
| Weight | 61 kg (134 lb; 9.6 st) |
| Division |
Lightweight Super Lightweight |
| Style | Muay Thai K1 |
| Fighting out of | Amsterdam, Netherlands |
| Trainer | Paul Pengel, Vincent Pengel |
| Kickboxing record | |
| Total | 66 |
| Wins | 45 |
| By knockout | 24 |
| Losses | 18 |
| By knockout | 7 |
| Draws | 2 |
| No contests | 1 |
| Other information | |
| Website | http://www.sergiowielzen.com |
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Sergio 'Kleintje' Wielzen (born November 1, 1987 in Suriname) is a Dutch based Surinamese super lightweight Muay Thai kickboxer formerly fighting out of Amsterdam, Netherlands for Black Label and FF Carbin. Medio 2015 he switched to Sityodtong Muay Thai & Kickboxing Amsterdam to be trained by Paul and Vincent Pengel. His nickname in Dutch is 'Kleintje' - which translates as 'Little One' in English. Despite his deceptively small stature he is known for his explosive power - having won many of his fights by KO or TKO. He is the former (and first ever) It's Showtime 61MAX world champion as well as the current Lion Fight Muay Thai world lightweight champion
Originally from Suriname Sergio moved to the Netherlands where he became involved in the Dutch national Muay Thai scene beginning his career at C-Class. An explosive fighter despite his short stature, Sergio worked his way up through the ranks finishing many of his opponents and was becoming noticed as one of the top young prospects at -61 kg in the Netherlands. In 2007 he met fellow up and coming fighter, Mohammed 'Mootje' Kamal, coming out on top in what would be the biggest victory in his career up to that point, winning by decision after five rounds in their B-Class clash. The two would meet again in a re-match the following year, this time at A-Class level. Although Sergio suffered a TKO defeat, he also proved that he had an excellent chin, being knocked down time and time again before the referee finally stopped it in the fourth.
Sergio would truly emerge on the international scene in 2010 when he faced Thai legend Anuwat Kaewsamrit in Geneva, Switzerland. In a match he was considered a clear underdog, Sergio shocked the Muay Thai world by knocking out the 'Iron Hands of Siam' via a vicious head kick after just 30 seconds. Due to his results on the local scene – including winning the U.M.C. Contender title against Imed Boukouayel - Sergio would become involved with the It's Showtime organization, making his debut in Milan and defeating local fighter Matteo Lippi by knockout.
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