S
Sergio Wielzen
Active fighter · NL
Dutch kickboxer; Glory and ONE Championship veteran; trains at Mejiro Gym Amsterdam.
Mejiro Gym is a Muay Thai gym in Amsterdam. 5 notable fighters and trainers are linked to it, including Sergio Wielzen.
Lauriergracht 86 HS, 1016 RM Amsterdam, Netherlands, Amsterdam
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Historic Amsterdam gym founded by Jan Plas in 1978, the cradle of Dutch-style Muay Thai/kickboxing.
Public associations sourced from gym websites, fight records, and Wikipedia. Each profile is unclaimed — the real person can claim and edit at any time.
Founder of Mejiro Gym (1978); pioneer of Dutch kickboxing; deceased 2010.
2-time K-1 World MAX champion; Mejiro Gym product.
8-time world Muay Thai champion; legendary Mejiro Gym product.
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#39 of 42 Muay Thai gyms in Amsterdam
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