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Early Life and Fighting Lineage In the rural province of Buriram, located in Thailand's impoverished Isaan region, Manachai Yamsiri was born on November 6, 1995, into a family where Muay Thai was more than a sport—it was a way of life. At the tender age of seven, young Manachai, who would become known to the world as Superlek Kiatmoo9, began his journey in the art of eight limbs, inspired by his two uncles who were both accomplished fighters. Chief among these influences was his uncle Singdam Kiatmoo9, a four-time Lumpinee Stadium champion who had won the prestigious Sports Writers of Thailand Fighter of the Year award in 2002.

Singdam trained at the Kiatmoo9 gym just 300 meters from Superlek's childhood home, and the young fighter watched in awe as his uncle demonstrated the technical mastery and warrior spirit that would define the Kiatmoo9 fighting style. The Isaan region, Thailand's largest and most populous yet least visited area, has historically produced some of the toughest fighters in Muay Thai history, including 1990s legends Chanchai Sor Tamarangsi, Tongchai Tor Silachai, and Samson Issan. Many fighters from this poor region are raised in bare-bones gyms, driven by economic necessity to forge their way to the country's biggest stadiums. For Superlek, Muay Thai represented not just athletic ambition but a potential path out of poverty for his entire family.

When Superlek's grandfather first took him to the neighborhood gym at age eight, Singdam had just claimed his Fighter of the Year honor, while another uncle, Panomrunglek Kiatmoo9, was well on his way to multiple Lumpinee Stadium World Titles. Training alongside these champions, the young Superlek absorbed not just techniques but the mindset of excellence that characterized the Kiatmoo9 stable.

Rise Through the Bangkok Stadium Circuit (2011-2016) Superlek's competitive career began to flourish in 2011 when, at just 15 years old, he captured his first major title—the Thailand Mini-Flyweight Championship at 105 pounds—defeating Phetsakon FA Group. This victory announced the arrival of a special talent, but it was merely the opening chapter of what would become a legendary career.

In 2012, at age 17, Superlek embarked on a remarkable run of form, winning nine of his 11 fights at the historic Lumpinee Stadium. That year, he captured the Thailand Flyweight title at 112 pounds by defeating Palangphon Watcharachai, then earned a shot at the prestigious Lumpinee Stadium Super Flyweight championship at 115 pounds. To win the Lumpinee title, Superlek faced another rising Thai legend, Muangthai "The Elbow Zombie" PKSaenchaigym, using his long jab to keep the advancing Muangthai at bay while setting up his trademark body kick. Following this victory, he successfully defended the title against challenger Sangmanee Sor Tienpo later that same year. For his exceptional performance throughout 2012, Superlek received the prestigious Sports Authority of Thailand Muay Thai Fighter of the Year award—one of the highest honors in Thai combat sports and a remarkable achievement for a 17-year-old. The award recognized not just his victories but the technical brilliance and devastating striking arsenal that had earned him the nickname "The Kicking Machine.

In 2013, Superlek continued his ascent by moving up to 118 pounds and capturing the Lumpinee Stadium Bantamweight title. His path to this title wasn't smooth—he initially lost to frequent rival Mondam Sor Werapon in their third meeting, but bounced back three months later to defeat Mondam for the championship. In the decisive fourth meeting, Superlek sealed the victory with a devastating right elbow knockout in the third round. He capped off 2013 by winning the Thailand Featherweight title at 126 pounds. The years 2014 and 2015 proved more challenging, as Superlek faced setbacks and failed to capture new titles.

Despite this, he remained a top contender in both Lumpinee and Rajadamnern rankings, taking on the elite fighters of his era including Sam-A Kaiyanghadaogym, Superbank Sakchaichode, and Pornsanae Sitmonchai. In 2015, he secured only three wins out of nine fights at Lumpinee Stadium. These lean years served to sharpen his resolve and technical skills. Superlek's comeback in 2016 was emphatic. At the newly built Lumpinee Stadium, he defeated Saeksan Or.

Kwanmuang in an all-out war to earn the WBC Muay Thai Super Featherweight World Champion title at 130 pounds. That same year marked his international debut in Japan, where he delivered a stunning second-round knockout via right kick against Yasuyuki at the Suk Wanchai Muay Thai Super Fight. During this period, Superlek also competed internationally against opponents from Japan, Scotland, England, and Spain, achieving a clean sweep of victories and building his reputation beyond Thailand's borders.

Superlek signed with ONE Championship in December 2018, making his transition to the global stage at a time when he was already a highly regarded stadium star in Thailand rather than a retiree or fighter in the twilight of his career. He made his organizational debut on February 16, 2019, at ONE Championship: Clash of Legends, defeating Cambodian fighter Lao Chetra by unanimous decision. Superlek continued his winning streak in May 2019 at ONE Championship: Warriors of Light, defeating Portugal's Rui Botelho by unanimous decision. On July 31, 2020, he faced longtime rival Panpayak Jitmuangnon for the seventh time at ONE Championship: No Surrender, winning by unanimous decision to improve his record against Panpayak to 2-4-1.

In February 2021, Superlek challenged Ilias Ennahachi for the ONE Flyweight Kickboxing World Championship at ONE Championship: Fists of Fury. The fight ended in a controversial unanimous decision loss that shocked many observers. Due to the controversial nature of the decision, ONE CEO Chatri Sityodtong immediately announced a title rematch.

In May 2022, Superlek entered the ONE Muay Thai Flyweight Grand Prix, defeating former Shoot Boxing and RISE champion Taiki Naito by unanimous decision in the quarterfinals at ONE 157. In August 2022, he faced Walter Goncalves in the semifinals at ONE on Prime Video 1, knocking him out with a brutal first-round elbow.

Superlek was scheduled to face Panpayak Jitmuangnon in the tournament final on October 22, 2022, but withdrew due to training injuries. The bout was rescheduled for December 3, 2022, at ONE 164, but both fighters failed to make weight in the flyweight division and were disqualified from the tournament, agreeing instead to compete at a 138-pound catchweight. Superlek won by split decision.

The rematch with Ilias Ennahachi was scheduled for January 2023, but Ennahachi withdrew due to his inability to make the flyweight limit while hydrated and vacated the title. On January 13, 2023, at ONE on Prime Video 6, Superlek instead faced two-time ISKA World Champion Daniel Puertas for the vacant championship, winning by unanimous decision to finally claim ONE gold.

Superlek's first title defense was originally scheduled against Rodtang Jitmuangnon in March 2023, but Rodtang withdrew due to injury and was replaced by Danial Williams. Superlek won the bout via third-round knockout. In June 2023, he faced two-division WBC Muay Thai champion Nabil Anane at ONE Friday Fights 22, defeating him via devastating first-round body punch knockout in just two minutes.

On July 15, 2023, Superlek faced Tagir Khalilov in the main event of ONE Fight Night 12. At weigh-ins, he missed weight by 0.25 pounds, and the bout proceeded at catchweight with Superlek fined a portion of his purse. He won by second-round technical knockout. On September 22, 2023, Superlek achieved one of the most significant victories of his career—a unanimous decision over ONE

Flyweight Muay Thai World Champion Rodtang Jitmuangnon at ONE Friday Fights 34. He became the only fighter to defeat the "Iron Man" under ONE Championship rules in a bout that set viewership records. However, because Superlek had again missed weight, Rodtang's title was not on the line.

On January 28, 2024, at ONE 165 in Tokyo, Superlek defended his ONE Flyweight Kickboxing World Championship against Japanese kickboxing icon Takeru Segawa. The five-round title defense was described as a brilliant showcase of why he is called "The Kicking Machine," as Superlek outpointed the highly technical Japanese fighter. Following his victory over Takeru, Superlek defeated Kongthoranee Sor Sommai by decision at ONE Friday Fights 68 on June 28, 2024.

On September 6, 2024, at ONE 168 in Denver, Colorado, Superlek challenged Jonathan "The General" Haggerty for the ONE Bantamweight Muay Thai World Championship. The fight was a rematch of their 2018 encounter, which Superlek had won. Fighting at Ball Arena before a packed crowd on United States soil, Superlek delivered one of the most stunning performances in ONE Championship history. He had trained specifically for this moment: "The elbow was something I trained for.

I know that when you use an elbow, the elbow will get there before the cross, so I was just waiting for the opportunity to hit him with it because I knew Haggerty had a very strong cross. Just 49 seconds into the first round, as Haggerty launched a right hand, Superlek timed his attack perfectly, slipping underneath and firing a devastating counter elbow that connected flush with Haggerty's temple. Though Haggerty displayed the heart of a champion by getting to his feet, he failed to beat the eight-count, and Superlek became a two-sport, two-division ONE World Champion.

Superlek's victory earned him a $50,000 performance bonus from ONE Chairman and CEO Chatri Sityodtong and extended his winning streak to 11 consecutive victories in ONE Championship, pushing his overall record to an impressive 139-29. After the fight, Superlek expressed his pride in representing Muay Thai: "I just wanted to show that I'm a Thai fighter and that Thai fighters are strong and have amazing skills that can be showcased all over the world. I'm extremely grateful for the opportunity that I had here. I want everybody all over America and the world to see how incredible Muay Thai is—the danger, the excitement, everything about Muay Thai.

In the lead-up to ONE 172 on March 23, 2025, at the Saitama Super Arena in Japan, Superlek was scheduled to face Nabil Anane in a title unification bout, with Anane holding the interim bantamweight Muay Thai title. However, just hours before the event, Superlek failed to pass the mandatory hydration tests despite making the weight limit.

During the weigh-in process, Superlek attempted his first hydration test one hour into the three-hour window but failed. He made a second attempt 16 minutes before the window closed and failed again. As a result, Superlek was stripped of his ONE Bantamweight Muay Thai World Title on the scale, and the scheduled five-round championship bout was converted to a three-round non-title contest. Superlek lost the fight to Anane via unanimous decision, marking his first defeat since 2021.

This incident highlighted a recurring pattern in Superlek's career—he had previously missed weight for his title fight against Rodtang (coming in five pounds over the flyweight limit) and also missed weight in his fight against Tagir Khalilov. Despite the disappointment, Anane was gracious after the victory, noting that the towering Thai fighter "trained during Ramadan" and made significant sacrifices for the bout. ONE Championship CEO Chatri Sityodtong has indicated interest in a rubber match between the two to determine the undisputed bantamweight champion.

Superlek is classified as a Muay Femur stylist, the most technical and cerebral of Muay Thai fighting styles, characterized by superior ring intelligence, precise timing, and scoring efficiency. His striking arsenal is characterized by lightning-fast kicks and devastating knee strikes, embodying the perfect blend of speed, power, and precision required to compete consistently at the highest level.

Singdam Kiatmoo9, his uncle and lifelong training partner, attributes Superlek's success to more than just physical gifts: "He is well-rounded, strong, and has a big heart inside and outside the ring," Superlek has said of Singdam. Singdam's longevity—remaining active and successful at age 37, which is rare for a Thai fighter—serves as a model for Superlek's own approach to career sustainability.

Superlek credits his success to the entire Kiatmoo9 stable: "All of my teammates at Kiatmoo9 are good, like Petchpanomrung [uncle], who is a Kickboxing World Champion, and Fahsai [trainer], who was an Olympic athlete. And also Sam-A [Gaiyanghadao, brother-in-law], who is the ONE [Strawweight Muay Thai and Kickboxing] World Champion. Many people around me are super. They all encourage me. We are all different and good in our own way. We learn from each other—good and bad—and try to improve and push each other.

As of 2024, Superlek has compiled a professional record spanning over 171 fights with approximately 138 victories, establishing himself as one of the most prolific and successful Muay Thai fighters of his generation. As of October 2024, he ranked #1 in Combat Press' men's pound-for-pound rankings for Muay Thai and #6 in Beyond Kick's men's pound-for-pound rankings for kickboxing.

In January 2025, ONE Championship named Superlek as co-Fighter of the Year for 2024 (tied with Kade Ruotolo), recognizing his spectacular knockout of Jonathan Haggerty and his continued dominance in the striking arts. Superlek's rise to international fame has opened opportunities beyond fighting. He recently opened his own Muay Thai academy, MC Superlek, in Nonthaburi, Thailand. Founded in September 2024 in the Bang Kruai district, the gym represents his commitment to giving back to his community and passing on his knowledge to the next generation.

"I have my own boxing gym, MC Superlek, in Nonthaburi. I want everyone to come and learn Muay Thai or work out. I want to pass on my kicking skill and additional techniques to young students who come to learn," he explained. The camp maintains strong ties to Superlek's roots, with the majority of coaches and fighters hailing from his home village of Takothapi in Buriram province, preserving the Kiatmoo9 training tradition. Reflecting on his journey from poverty to global stardom, Superlek admitted: "The turning point that made me famous was when I joined ONE.

There were many fights where I was seen as the underdog, but I won those fights, which made me more and more famous—especially after the fight where I beat Takeru. Many people said I had no chance against him [in kickboxing], but I beat him, which made my followers increase a lot. In 2025, Superlek officially joined the prestigious YOKKAO Fight Team, standing alongside a roster of elite Muay Thai fighters and further cementing his status as one of the sport's global ambassadors.

From a young boy fighting in local festivals to a world champion breaking records on the global stage, Superlek Kiatmoo9's journey is a testament to the transformative power of dedication and the relentless pursuit of excellence.

At 29 years old, with the ONE Flyweight Kickboxing World Championship still in his possession and the desire to reclaim bantamweight glory, "The Kicking Machine" continues to evolve and compete at the highest level. His journey from the bare-bones gyms of rural Isaan, driven by economic necessity, to sold-out arenas in Denver and Tokyo, demonstrates not only his extraordinary talent but the universal appeal of Muay Thai as both a martial art and a vehicle for social mobility.

With his consistent performance, unmatched technical abilities, and decades of experience in elite competition, Superlek is more than just a champion—he's a living legend. As he continues to compete, mentor the next generation, and represent Thai culture on the world stage, Superlek Kiatmoo9 stands as one of the defining fighters of modern Muay Thai—a technician, a warrior, and an inspiration to millions around the world.

1. Wikipedia - Superlek Kiatmuu9 (https://en.wikipedia.org/wiki/Superlek_Kiatmuu9)

2. ONE Championship Official Profile (https://www.onefc.com/athletes/superlek/)

3. Evolve Daily - 'Superlek Kiatmoo9: 7 Of The Best Wins' (https://evolve-mma.com/blog/superlek-kiatmoo9-7-of-the-best-wins-and-fights-of-his-legendary-career/)

4. YOKKAO - Superlek Profile (https://yokkao.com/pages/superlek-kiatmuu9-muay-thai-fighter)

5. Muay Thai.com - 'Superlek Kiatmoo9: The Kicking Machine's Best Fights and Biography' (https://muaythai.com/superlek-kiatmoo9-best-fights-biography/)

6. MMA Mania - ONE 168 Highlights (https://www.mmamania.com/2024/9/7/24238335/highlights-superlek-knocks-out jonathan-haggerty-double-champ-one-championship-168-muay-thai)

7. Sky Sports - ONE 168 Coverage (https://www.skysports.com/mma/news/36350/13210874/one-168-superlek-kiatmo o9-knocks-out-britains-jonathan-haggerty-to-attain-two-sport-glory)

8. Low Kick MMA - Title Stripping Coverage (https://www.lowkickmma.com/superlek-stripped-muay-thai-title/)

9. Muay Thai Records - Weight Miss Coverage (https://muaythairecords.com/news/superlek-fails-hydration-stripped-of-one-bantamweight-world-title)

10. ONE Championship - 'The Muay Thai Legends Who Inspired Superlek' (https://www.onefc.com/features/the-muay-thai-legends-who-inspired-superlek-to-achieve-greatness/)

11. NOW Muay Thai - '1 Day with Superlek' (https://www.nowmuaythai.com/blog/1-day-with-a-world-champion-superlek)

12. MMA Sucka - 2024 Fighter of the Year (https://mmasucka.com/superlek-kade-one-championship-fighters-of-year-2024/)

13. Siam Fight Mag - MC Superlek Gym Feature (https://www.siamfightmag.com/en/mc-superlek-muay-thai-gym-the-camp-of-superstar-superlek-kiatmuu9/