Introduction
Superlek 'The Kicking Machine' Kiatmuu9 is the reigning ONE Flyweight Kickboxing World Champion (since January 2023), former ONE Bantamweight Muay Thai World Champion (September 2024 to March 2025), and one of the greatest Muay Thai fighters of his generation. The Buriram, Thailand-born technical Muay Fimeu specialist — Kiatmuu9 Gym product, nephew of four-time Lumpinee Stadium champion Singdam Kiatmuu9, YOKKAO Fight Team member — has competed in over 170 professional Muay Thai bouts across his 23-year career and held the Lumpinee Stadium Super Flyweight, Bantamweight, Thailand Flyweight, and WBC Muay Thai Super Featherweight world titles before his ONE Championship era. He is currently #1 in Combat Press' men's pound-for-pound Muay Thai rankings and is the foundational technical Muay Thai contributor to the modern ONE Championship era.
Contents
Quick Stats
Background
Fighting Style
Career Highlights
Notable Fights & Rivalries
Championships & Accolades
Current Status
Fun Facts
Legacy / Verdict
Frequently Asked Questions
References
Quick Stats
Nickname: The Kicking Machine
Age: 30 (born November 6, 1995)
Height: 5'7" (170 cm)
Reach: 67" (170 cm)
Weight Class: Flyweight (135 lb), Bantamweight (145 lb)
Stance: Orthodox
Team: Kiatmuu9 Gym (Buriram, Thailand) / YOKKAO Fight Team
Pro Combat Record: 170+ Muay Thai bouts; substantial kickboxing record (last fight ONE 173 November 2025)
Background
Born Manachai Yiamsiri on November 6, 1995 in Buriram, Thailand — in the Northeastern Isaan region renowned for producing top-tier Muay Thai talent. Superlek began fighting at the age of 7, inspired by his two uncles — both famous Thai fighters. One of his uncles, Singdam Kiatmuu9, is a multiple-time Lumpinee Stadium champion (four-time) and a fellow YOKKAO Fight Team member. He grew up alongside Petpanomrung Kiatmuu9 — the current Glory Featherweight Champion.
Superlek trained at the elite Kiatmuu9 Gym in Buriram, where he honed his technical precision, powerful kicks, and signature knee strikes. He turned professional in Muay Thai at age 7 and has competed in over 170 professional Muay Thai bouts across his 23-year career. He won his first major title — the Thailand Mini-Flyweight (105 lbs) Championship — in 2011 at age 15. He joined the prestigious YOKKAO Fight Team in 2025 and owns his own MC Superlek Muay Thai academy in Nonthaburi. He is currently planning to expand his entrepreneurial endeavors beyond Muay Thai and is in early stages of opening a grocery store. He resides in Thailand.
Fighting Style
Technical Muay Fimeu (clever fighting) Muay Thai with elite striking precision combined with kickboxing-tested adaptability. Superlek's pattern is textbook Buriram-tradition Muay Thai — fast kicks, knees, and elbow striking precision combined with championship-level distance management and the highest-output striking output of his championship-era prime years. The September 2023 ONE Friday Fights 34 win over Rodtang Jitmuangnon (the most-historic Muay Thai fight of the modern era), the January 2024 ONE 165 unanimous-decision win over Takeru Segawa for the ONE Flyweight Kickboxing World Title defense, and the September 2024 ONE 168: Denver R1 49-second elbow KO of Jonathan Haggerty for the ONE Bantamweight Muay Thai World Title are the canonical examples of his championship-level fighting arsenal.
His weakness — exposed across 2025 in the move up to bantamweight — is championship-level cardio durability against the modern ONE bantamweight title contender pool. The March 2025 ONE 172 weight miss leading to a strip of the ONE Bantamweight Muay Thai World Title, the subsequent loss to Nabil Anane in their non-title rematch (the first knockdown of his ONE career), and the November 2025 ONE 173 unanimous-decision loss to Yuki Yoza in bantamweight kickboxing reflected variations of the same pattern. Within his championship-era prime years from January 2023 to September 2024, however, his arsenal was the technical floor of ONE Championship's flyweight and bantamweight Muay Thai and kickboxing competition — undefeated since 2021 across his championship-era prime years.
Career Highlights
2003 (age 7) — Pro Muay Thai debut in Thailand.
2011 — Thailand Mini-Flyweight (105 lbs) Champion.
2012 — Thailand Flyweight (112 lbs) Champion; Lumpinee Stadium Super Flyweight (115 lbs) Champion; Sports Authority of Thailand Muay Thai Fighter of the Year.
2013 — Lumpinee Stadium Bantamweight (118 lbs) Champion; Thailand Featherweight (126 lbs) Champion.
2016 — WBC Muay Thai Super Featherweight World title.
2022 — vacant True4U Super Lightweight (140 lbs) title; ONE Championship debut era.
February 16, 2019 — ONE Championship debut at ONE: Clash of Legends vs Lao Chetra. Won by unanimous decision.
February 26, 2021 — ONE: Fists Of Fury vs Ilias Ennahachi for ONE Flyweight Kickboxing World Title. Lost controversial UD.
August 27, 2022 — ONE on Prime Video 1 vs Walter Goncalves. Won by R1 elbow KO; Performance of the Night.
January 13, 2023 — ONE Fight Night 6 vs Daniel Puertas Gallardo. Won vacant ONE Flyweight Kickboxing World Title.
September 22, 2023 — ONE Friday Fights 34 vs Rodtang Jitmuangnon. Won; one of the most historic Muay Thai fights ever.
January 28, 2024 — ONE 165 vs Takeru Segawa. Won by UD; defended ONE Flyweight Kickboxing World Title.
September 6, 2024 — ONE 168: Denver vs Jonathan Haggerty. Won ONE Bantamweight Muay Thai World Title by R1 49-second elbow KO; two-sport, two-division ONE World Champion.
March 2025 — ONE 172 weight miss; stripped of ONE Bantamweight Muay Thai World Title.
March 2025 — Lost non-title rematch to Nabil Anane; first knockdown of ONE career.
November 16, 2025 — ONE 173 vs Yuki Yoza. Lost UD in bantamweight kickboxing.
May 15, 2026 — Scheduled vs Abdulla Dayakaev at The Inner Circle ('one last crack at bantamweight').
Late 2026 — ONE Flyweight Kickboxing World Title defense expected after Dayakaev fight.
Notable Fights & Rivalries
vs Rodtang Jitmuangnon (ONE Friday Fights 34, 2023)
Superlek's most-watched Muay Thai career fight. He defeated Rodtang Jitmuangnon — the foundational 'Iron Man' Muay Thai legend and former longtime ONE Flyweight Muay Thai World Champion — at ONE Friday Fights 34 in September 2023 in one of the most historic Muay Thai fights ever recorded. The result was widely cited as the foundational moment of Superlek's pound-for-pound elite Muay Thai status and was the most-replayed Muay Thai bout of 2023. Rodtang has since moved to challenge for the ONE flyweight kickboxing interim title against Takeru Segawa at ONE Samurai 1 in April 2026.
vs Takeru Segawa (ONE 165, 2024)
Superlek's career-defining ONE Flyweight Kickboxing World Title defense. He defeated Takeru Segawa — Japanese kickboxing icon and former K-1 World Champion — by unanimous decision at ONE 165 on January 28, 2024 in Tokyo in the main event in front of a Japanese home crowd. The result confirmed Superlek as a true superstar in the ONE Championship era and gained him a massive Japanese fanbase that included follow-up Muay Thai seminars in Japan with hundreds of attendees. Takeru is currently scheduled to face Rodtang at ONE Samurai 1 in April 2026 for the interim ONE Flyweight Kickboxing World Title.
vs Jonathan Haggerty (ONE 168: Denver, 2024)
Superlek's two-sport, two-division ONE World Champion crowning fight. He stopped Jonathan Haggerty — reigning ONE Bantamweight Muay Thai World Champion and former two-sport ONE King — by R1 49-second elbow KO at ONE 168 on September 6, 2024 in Denver. The result was widely cited as one of the most-replayed Muay Thai title-changing finishes of 2024 — Joe Rogan reacted to the finish with 'Oh my God perfect elbow' — and made Superlek a two-sport, two-division ONE World Champion. Haggerty is preparing for a ONE Bantamweight Muay Thai title bid against Nabil Anane after recovering from injury.
vs Yuki Yoza (ONE 173, 2025)
Superlek's most-watched ONE 2025 setback. Yuki Yoza — former K-1 Champion in his ONE Championship debut series — defeated Superlek by unanimous decision in bantamweight kickboxing at ONE 173 on November 16, 2025 in Tokyo. The result was Superlek's third bantamweight setback of 2025 (following the ONE 172 weight miss and the Nabil Anane rematch loss) and helped trigger his March 2026 announcement that he was returning to flyweight for a ONE Flyweight Kickboxing World Title defense. Yoza had previously notched back-to-back unanimous-decision wins over Elbrus Osmanov and Petchtanong Petchfergus.
Championships & Accolades
Reigning ONE Flyweight Kickboxing World Champion (since January 13, 2023).
Former ONE Bantamweight Muay Thai World Champion (September 2024 to March 2025; stripped on missed weight at ONE 172).
Two-sport, two-division ONE World Champion (briefly, September 2024 to March 2025).
5x ONE Performance of the Night winner (Danial Williams, Walter Goncalves, Nabil Anane, Takeru Segawa, Jonathan Haggerty).
WBC Muay Thai Super Featherweight World Champion (2016).
Multiple Lumpinee Stadium Champion: Super Flyweight (115 lbs, 2012), Bantamweight (118 lbs, 2013).
Multiple Thailand Champion: Mini-Flyweight (105 lbs, 2011), Flyweight (112 lbs, 2012), Featherweight (126 lbs, 2013).
True4U Super Lightweight (140 lbs) Champion (2022).
2012 Sports Authority of Thailand Muay Thai Fighter of the Year.
Combat Press #1 men's pound-for-pound Muay Thai ranking.
170+ professional Muay Thai bouts across 23-year career.
Career wins over Rodtang Jitmuangnon (ONE Friday Fights 34, 2023), Takeru Segawa (ONE 165, 2024), Jonathan Haggerty (ONE 168 R1 49-second elbow KO, 2024).
YOKKAO Fight Team member (since 2025).
Owner of MC Superlek Muay Thai academy in Nonthaburi.
Current Status
Active in ONE Championship. Superlek's most recent fight was the November 16, 2025 unanimous-decision loss to Yuki Yoza at ONE 173 in Tokyo — his third bantamweight setback of 2025. He is scheduled to face Abdulla Dayakaev in a bantamweight Muay Thai bout at The Inner Circle on May 15, 2026 — described in his own social media as 'one last crack at bantamweight' before returning to flyweight for a ONE Flyweight Kickboxing World Title defense later in 2026.
ONE CEO Chatri Sityodtong confirmed in March 2026 that Superlek wants to return to flyweight after the Dayakaev fight: 'Superlek wanted to become a two division world champion in different sports and he has held up the division and we were not sure if he could make weight for flyweight again. But we spoke to him before this several weeks ago and he says for his next fight he would like to defend the flyweight kickboxing world title.' He continues to train at Kiatmuu9 Gym in Buriram, Thailand and represents the YOKKAO Fight Team. He owns his own MC Superlek Muay Thai academy in Nonthaburi where he conducts training and seminars. He is widely cited as one of the foundational Muay Thai technical contributors to modern ONE Championship competition. He is currently #1 in Combat Press' men's pound-for-pound Muay Thai rankings.
Fun Facts
Began fighting at age 7 — making him one of only a handful of professional Muay Thai fighters to debut in childhood and continue an unbroken 23-year competitive career.
Has competed in over 170 professional Muay Thai bouts across his career — making him one of the most-experienced active Muay Thai fighters in the world.
His nickname 'The Kicking Machine' reflects his championship-level high-output kicking and knee striking patterns — earning him universal respect from peers and trainers as one of the foundational technical Muay Thai contributors of his generation.
Is the nephew of Singdam Kiatmuu9 — a multiple-time Lumpinee Stadium champion and YOKKAO Fight Team member who introduced Superlek to professional Muay Thai at the elite Kiatmuu9 Gym in Buriram.
Grew up alongside Petpanomrung Kiatmuu9 — the current Glory Featherweight Champion — at the Kiatmuu9 Gym training base.
Stopped Jonathan Haggerty at ONE 168: Denver in September 2024 by R1 49-second elbow KO — Joe Rogan reacted to the finish with the now-famous quote 'Oh my God perfect elbow' for the World Title.
Owns his own MC Superlek Muay Thai academy in Nonthaburi — where he teaches Muay Thai seminars and continues to develop his entrepreneurial portfolio.
Joined the prestigious YOKKAO Fight Team in 2025 alongside fellow Thai legends — including his uncle Singdam Kiatmuu9.
Is currently planning to expand beyond Muay Thai — in early stages of opening a grocery store in Thailand. Has been candid that he is uncertain whether he will stay in martial arts long-term or move into other areas.
Legacy / Verdict
Superlek 'The Kicking Machine' Kiatmuu9 is one of the greatest Muay Thai fighters of his generation and the foundational technical Muay Thai contributor to the modern ONE Championship era. The 170+ professional Muay Thai bouts across 23-year career, the multiple Lumpinee Stadium Championships across multiple weight classes, the 2012 Sports Authority of Thailand Muay Thai Fighter of the Year award, the WBC Muay Thai Super Featherweight World Title (2016), the September 2023 ONE Friday Fights 34 win over Rodtang Jitmuangnon, the January 2024 ONE 165 win over Takeru Segawa, the September 2024 ONE 168: Denver R1 49-second elbow KO of Jonathan Haggerty, the briefly-held two-sport two-division ONE World Champion status, and the still-reigning ONE Flyweight Kickboxing World Title (since January 2023) together place him in the conversation for greatest active Muay Thai fighter in the world. The Combat Press #1 men's pound-for-pound Muay Thai ranking is foundational evidence of his all-time Muay Thai standing.
What complicates the legacy is the 2025 bantamweight stretch — the March 2025 ONE 172 weight miss that led to the strip of his ONE Bantamweight Muay Thai World Title, the subsequent non-title rematch loss to Nabil Anane (the first knockdown of his ONE career), and the November 2025 ONE 173 unanimous-decision loss to Yuki Yoza in bantamweight kickboxing. The May 2026 'one last crack at bantamweight' against Abdulla Dayakaev and the expected late-2026 ONE Flyweight Kickboxing World Title defense represent the still-developing post-2024 chapter of his championship-era prime years. The competitive resume is permanent and the Muay Thai legacy is settled. The legacy as one of the greatest Muay Thai fighters of his generation and the foundational technical Muay Thai contributor to the modern ONE Championship era is permanent.
Frequently Asked Questions
Is Superlek Kiatmuu9 the ONE Flyweight Kickboxing World Champion?
Yes. He is the reigning ONE Flyweight Kickboxing World Champion — winning the vacant title on January 13, 2023 over Daniel Puertas Gallardo at ONE Fight Night 6. He successfully defended the title against Takeru Segawa at ONE 165 in January 2024 in one of the most-watched kickboxing fights in ONE Championship history. He is preparing to defend the flyweight kickboxing title in 2026 after a series of bantamweight setbacks across 2025.
What is Superlek Kiatmuu9's combat sports record?
Over 170 professional Muay Thai bouts across his career, plus a substantial kickboxing record. He turned professional in Muay Thai at age 7 in Thailand and has competed at the highest level in Lumpinee Stadium, Rajadamnern Stadium, and ONE Championship across a 23-year competitive career. He is widely regarded as one of the greatest Muay Thai fighters of his generation and is currently #1 in Combat Press' men's pound-for-pound Muay Thai rankings.
Was Superlek a two-sport ONE Champion?
Yes — briefly. He held the ONE Flyweight Kickboxing World Title (since January 2023) and won the ONE Bantamweight Muay Thai World Title in September 2024 by R1 KO over Jonathan Haggerty at ONE 168: Denver — making him a two-sport, two-division ONE World Champion. However, he was stripped of the ONE Bantamweight Muay Thai World Title in March 2025 after missing weight ahead of ONE 172. He retains the ONE Flyweight Kickboxing World Title.
What style does Superlek fight?
Technical Muay Fimeu (clever fighting) Muay Thai with elite striking precision combined with kickboxing-tested adaptability. Superlek's pattern is textbook Buriram-tradition Muay Thai — fast kicks, knees, and elbow striking precision combined with championship-level distance management. The September 2023 ONE Friday Fights 34 win over Rodtang Jitmuangnon, the January 2024 ONE 165 win over Takeru Segawa, and the September 2024 ONE 168: Denver R1 49-second elbow KO of Jonathan Haggerty are the canonical examples — earning him the nickname 'The Kicking Machine.'
Where is Superlek from?
Born Manachai Yiamsiri on November 6, 1995 in Buriram, Thailand — in the Northeastern Isaan region renowned for producing top-tier Muay Thai talent. He began fighting at age 7, inspired by his two uncles — both famous Thai fighters. One of his uncles, Singdam Kiatmuu9, is a four-time Lumpinee Stadium champion and a fellow YOKKAO Fight Team member. He trains at Kiatmuu9 Gym in Buriram, joined the YOKKAO Fight Team in 2025, and owns his own MC Superlek Muay Thai academy in Nonthaburi.
What is Superlek's next fight?
He faces Abdulla Dayakaev in a bantamweight Muay Thai bout at The Inner Circle on May 15, 2026 — described as 'one last crack at bantamweight' before returning to flyweight for a ONE Flyweight Kickboxing World Title defense later in 2026. Speaking ahead of the bout he wrote: 'Before I go conquer the flyweight division, I'm taking one last crack at bantamweight. Giving the haters one more chance to root against me. My goal is clear: the comeback everyone has been waiting for.'
References
Wikipedia — Superlek Kiatmuu9 career overview
Bangkok Post — Chatri confirms Superlek flyweight return (March 2026)
Bangkok Post — Superlek delays flyweight return for one last crack at bantamweight