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From the rubber-tree forests of southern Thailand to the bright lights of ONE Championship, Rodlek built one of the most durable careers in the modern era of Muay Thai — forged entirely on pressure, power, and an unshakable refusal to back down.

On February 3, 1990, Prasit Prasertsin came into the world in Ban Na San, a small municipality within Surat Thani Province in the sun-bleached coastal south of Thailand. He would eventually take the ring name Rodlek — Thai for 'steel' or 'iron locomotive' — a moniker that would prove prophetic. But before the nickname, before the championships and the global stages, there was simply a young boy growing up in hard circumstances, in a country where Muay Thai is not merely a sport but a cultural inheritance.

When Rodlek was around seven years old, his family relocated from Surat Thani to the island of Koh Samui, today famous as one of Thailand's most prized tourist destinations. The family's circumstances, however, were far from the resort lifestyle. According to Rodlek's own account, shared with ONE Championship, his parents were among the rural poor — they lived in a forest hut without electricity, tapping rubber trees to supplement whatever they could earn. His father eventually transitioned to fishing; his mother sold vegetables. In a part of the world where poverty and martial arts have long coexisted in an almost symbiotic relationship, Muay Thai would soon enter the picture.

The catalyst arrived not from a trainer knocking on their door, nor from a television broadcast (though Rodlek had watched the sport on television and been captivated), but from a nine-day annual temple fair — one of those frenetic, carnival-like village festivals where Muay Thai bouts are staged as community entertainment and young boys, regardless of preparation, sometimes jump in. Rodlek was ten years old.

“I had no idea what I was doing. The opponent came from an actual gym. I just jumped in the ring. I managed to make it to the fourth round before the referee stopped it. Even though I lost, I wanted to fight again.”

It was his first fight. He lost. But rather than walking away defeated in spirit, the young Rodlek walked straight home and began training. With the help of relatives, he and his father invested in a sandbag and a pair of boxing gloves, setting them up in front of their rented home. Every day, he trained in that improvised outdoor gym. His singular stated mission at the time was to get a rematch and beat the kid who had stopped him. He got his wish — and he won.

For two years, Rodlek continued his self-directed training at home, competing at local temple fairs and provincial events whenever a promoter would take him. Then, at the age of twelve, a trainer from an established camp came by and offered him a place at Jaotalaytong Gym. His father asked him what he wanted. Rodlek said yes immediately. The Jaotalaytong years would be his first formal introduction to the technical craft of Muay Thai — footwork, timing, the cultivation of weapons beyond raw aggression. He fought constantly, building a reputation throughout Koh Samui and the surrounding Surat Thani province.

In Thailand's Muay Thai ecosystem, provincial fighting is understood by both trainers and fighters as a proving ground, not a destination. The real money, the real prestige, and the real competition are concentrated in Bangkok — specifically in the two great cathedral stadiums of the sport: Lumpinee and Rajadamnern. To compete there is to compete before the harshest and most knowledgeable judges in the world. To win there is to be legitimized. When Rodlek was fifteen years old, with local competition exhausted, he made the decision to move to Bangkok alone.

The move required a particular kind of courage: leaving behind family, friends, and the familiar rhythms of island life in exchange for the anonymity and grinding pace of the capital. He joined Sitsongpeenong Gym, one of Bangkok's well-regarded training establishments, and began fighting at Lumpinee and Rajadamnern — the twin temples of Thai boxing. The transition was not instant glory. Bangkok's fighters are more technically refined, better coached, and more experienced than most provincial opponents. Rodlek learned by absorbing those lessons, some of them painfully. What distinguished him from many who make the same journey and fade is his extraordinary durability and work ethic.

He kept fighting. Through his teenage years and into his twenties, Rodlek amassed bouts at a rate that would be considered unremarkable only within the preindustrial volume of Thailand's domestic Muay Thai circuit, where active fighters can log fifteen, twenty, or thirty fights in a calendar year. He accumulated over 170 professional bouts across his domestic career — a figure that, in any global combat sports context, is staggering. During this same period, Rodlek pursued formal education with an ambition that belied the stereotype of the fighter-as-only-athlete. He attended Rattana Bundit University in Bangkok and ultimately earned a master's degree in management — a credential that speaks to a disciplined and organized mind operating in parallel with the physical machine training daily in the gym. He is, in this sense, a rare archetype in combat sports: the intellectual brawler.

In the taxonomy of Muay Thai's classical fighting styles — Muay Femur (the technical stylist), Muay Khao (the knee fighter), Muay Tae (the kicker), and Muay Sok (the elbow specialist) — Rodlek belongs unmistakably to the Muay Mat tradition: the aggressive, power-oriented puncher who uses relentless forward pressure and high-volume striking to overwhelm opponents and accumulate damage over five rounds. His nickname, 'The Steel Locomotive,' is not merely branding.

It is an accurate description of his competitive identity. Rodlek walks toward his opponents the way a freight train moves down a track: steadily, with mass and momentum, indifferent to what's in its path. He absorbs punishment — significant punishment, at times — and keeps coming. In his celebrated three-round war with former WBC Muay Thai world champion Liam 'Hitman' Harrison at ONE: Legendary Quest in 2019, Rodlek was subjected to Harrison's notoriously destructive leg kicks throughout the bout. Observers noted that Rodlek not only absorbed those strikes but at points appeared to goad Harrison into throwing more, smiling through the impacts in a display that would horrify a boxing trainer but thrilled a Muay Thai audience.

“I need to approach him first, keep the pressure on him, and not let my guard down. That will be my advantage.”

His striking arsenal centers on heavy hands and devastating low kicks. Rodlek's punch combinations are built around the cross and the hook, thrown with full hip rotation and commitment — the kind of blows that change a fight's trajectory when they land. He transitions seamlessly between punching and kicking, creating unpredictable rhythm that disrupts his opponents' defensive timing.

The combination of Western boxing mechanics with traditional Muay Thai kicking makes his offense particularly punishing in extended exchanges. In the clinch — that close-range grappling province where many Muay Thai fights are ultimately decided — Rodlek employs knee strikes and elbows to maintain control, using his physical strength to off-balance opponents before either dumping them to the canvas or following with strikes upon separation. He is not a clinch specialist in the way that a Muay Khao fighter might be, but he is competent and dangerous there, which closes off one of the natural escape routes that technical fighters use against pressuring opponents.

What makes Rodlek genuinely difficult to fight is the psychological dimension of his style. Opponents who stop him are not necessarily going to slow him down. Fighters who land clean shots — sometimes spectacular shots — find that Rodlek simply recalibrates and keeps moving forward. Over 170 fights, he has developed the kind of mental armor that comes only from accumulated experience and a specific relationship with pain: it is, for him, simply information, not a stop sign.

Rodlek's domestic championship career represents the core of his legacy within Thailand. The two titles that defined his stadiums career — the WMC (World Muay Thai Council) World Championship and the Channel 7 Stadium Muay Thai World Championship — are earned, not given. Thailand's Channel 7 Stadium is one of the most prominent and widely broadcast venues in Thai Muay Thai, and its televised card reaches millions of households across the country every week. To become its champion is to enter the national consciousness.

Rodlek captured the Channel 7 Stadium Muay Thai title on April 24, 2016, defeating Nuenglanlek Jitmuangnon by decision — a fighter he had faced and beaten previously and who represents the standard of elite domestic Thai competition. The victory confirmed what years of consistent performances at Lumpinee and Rajadamnern had already suggested: Rodlek was a legitimate force at bantamweight, capable of defeating the best Thailand had to offer at his weight class. His career record at the stadiums lists encounters against names that read like a who's who of contemporary Thai Muay Thai: Rodtang Jitmuangnon — who would go on to become ONE Championship's flyweight Muay Thai world champion and one of the most celebrated fighters in the sport's modern era; Panpayak Jitmuangnon; Yodlekpet Or Atchariya; Seksan Or Kwanmuang; and Saemapetch Fairtex, among many others.

These are not curated opponents. They are the generation that defined Thai bantamweight Muay Thai in the 2010s. In this period, Rodlek also joined P.K. Saenchai Muaythaigym — arguably the most celebrated active Muay Thai gym in Thailand. Named Lumpinee Stadium's Gym of the Year in 2016, PK Saenchai produced fighters who competed at the highest levels globally, including Saenchai PKSaenchaimuaythaigym himself, widely considered one of the greatest Muay Thai practitioners in history. Joining the gym was both an elevation of training partners and a rebranding: Rodlek P.K. Saenchaimuaythaigym, the name that would follow him into the international arena.

“It was so exciting to arrive at PK for the first time. I was nervous and worried I wouldn't make the cut, but I gained so much positive experience from all the fighters and improved. We are like a big family.”

By 2019, ONE Championship had established itself as the premier combat sports organization in Asia — a promotion that had managed to create genuine global stars from a roster of Thai, Japanese, and international fighters. Its striking-only division, ONE Super Series, offered world title belts that carried real symbolic weight in the Muay Thai community. For Rodlek, it was the platform his career had been pointing toward. He made his ONE Championship debut on June 15, 2019, at ONE: Legendary Quest in Shanghai, China — an international stage in every sense. His opponent was Liam 'Hitman' Harrison, a British fighter of significant reputation who had held WBC Muay Thai world titles and was known for his powerful, fight-ending leg kicks. The bout was a war.

Harrison tested Rodlek's much-discussed durability, and the Steel Locomotive answered every test. After three rounds, Rodlek won by unanimous decision, improving his recorded professional mark to 126 wins, 40 losses, and 5 draws. The ONE run continued with remarkable momentum. In August 2019, at ONE: Dawn of Heroes in the Philippines, Rodlek stopped Andrew 'Maddog Fairtex' Miller in the third round by knockout — the kind of emphatic finish that establishes a fighter as a threat on any card. In January 2020, at ONE: Fire and Fury, he controlled Chris Shaw across three rounds, knocking Shaw down in the final seconds before claiming the unanimous decision. Three fights in ONE Super Series: three wins, one knockout.

Then came the ONE Bantamweight Muay Thai Tournament — one of the sport's most consequential events of 2020, staged in the surreal circumstances of the COVID-19 pandemic, with closed doors and no live audience inside Bangkok's Impact Arena. Rodlek was placed in the semi-finals against Saemapetch Fairtex, a technical prodigy and future champion whom he had beaten at the Channel 7 Stadium years earlier. This time, Saemapetch earned the majority decision. But fate intervened: Saemapetch sustained an injury and was unable to compete in the final, and Rodlek was reinstated. In the tournament final on August 28, 2020, against Kulabdam Sor.Jor.Piek-U-Thai — a streaking young fighter with significant momentum — Rodlek delivered perhaps the finest performance of his ONE career. He knocked Kulabdam down twice: once in the second round, once in the third. The unanimous decision victory was unambiguous.

Rodlek P.K. Saenchaimuaythaigym was the ONE Bantamweight Muay Thai Tournament Champion, and with it came the right to challenge Nong-O Gaiyanghadao for the world title. The title fight came at ONE: Collision Course on December 18, 2020, broadcast live from Singapore Indoor Stadium. Nong-O Gaiyanghadao is not merely a world champion — he is widely considered among the two or three greatest bantamweight Muay Thai fighters in the history of the sport. Rodlek prepared and studied, identifying Nong-O's elite boxing as the primary threat and attempting to time his pressure-based attack against a more experienced and dangerous opponent. In the third round, Nong-O landed a fight-ending knockout — Rodlek's first recorded KO loss since 2014. The dream was deferred.

“My goal has always been to be a ONE Super Series champion. That is going to be the best moment of my life. ONE Championship is a global organisation and is seen all over the world — it is my dream to showcase my skills in front of the world.”

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The setback was followed in November 2021 by a decision loss to the Brazilian technical fighter Felipe 'Demolition Man' Lobo in a kickboxing contest at ONE: NextGen III — a stylistically different challenge that exposed the limits of Rodlek's pressure-based game against a disciplined counter-striker. His ONE Championship tenure concluded with a final record of four wins and three losses — an honest ledger that tells the story of a fighter who competed against the absolute best in the world and won his share.

In April 2022, Rodlek made a move that surprised some observers but reflected a pragmatic and forward-looking approach to the post-championship chapter of his career: he joined Evolve MMA in Singapore, one of Asia's most decorated combat sports academies, both as a competitive member of its fight team and as an instructor. Evolve MMA had already assembled a faculty that included Nong-O Gaiyanghadao — the man who had stopped Rodlek just over a year earlier — as well as multiple world champions across disciplines. The irony was not lost on the Muay Thai community. The Evolve appointment served two purposes: it kept Rodlek connected to world-class training environments, and it activated a second career track as a coach and instructor — a natural transition for a veteran with over 170 fights of accumulated technical knowledge.

Teaching Muay Thai at a facility that attracts students from across Southeast Asia and beyond is meaningful work that extends his influence beyond what any individual fight result could achieve. He did not retire from competition. Instead, Rodlek entered the vibrant and growing independent Muay Thai circuit, competing primarily in Australia and Thailand under organizations including the Muay Thai League (MTL), Alliance Fight Promotion, Empire Fight Series, and Pride Fight Series. These promotions are part of a global grassroots Muay Thai ecosystem that has flourished in the years since major organizations expanded international interest in the sport. Australia, in particular, has developed a robust and passionate Muay Thai culture, and Rodlek's appearances there drew genuine excitement from fans who had followed his ONE Championship run.

In September 2024, Rodlek appeared in the co-main event of Muay Thai League 12 at The Star Gold Coast, Australia, where he faced Australian fighter Albert Tu'ua in a five-round contest marked by heavy clinch work. The unanimous decision went to Tu'ua. Two months later, in November 2024, Rodlek rebounded with a decision victory over Pern Phetmongkhon at Empire Fight Series 2 — a performance that earned praise for his tactical experience and volume striking against a durable local fighter. A December 2024 bout at Alliance Fight Promotion 3 against Andy Juniku further underscored his commitment to staying active.

The independent circuit has not been without its complications. A scheduled main event against Australian ranked fighter Nick Keros at Pride Fight Series 8 in Adelaide in November 2025 was reportedly cancelled when Rodlek was unable to make the agreed weight limit — a disappointment for fans anticipating the stylistic clash. Weight management is a recurring logistical challenge for fighters in their mid-thirties who are competing across multiple promotions and weight classes without the infrastructure of a major organization's medical team.

What does a career like Rodlek's mean, measured against the full canvas of Muay Thai history? He is not the sport's all-time great. He did not win a ONE Championship world title. He has losses that, in a shorter career, would define a fighter. But Muay Thai has always been a sport that rewards volume, durability, and the willingness to compete — values that the sport's ancient roots in physical and spiritual discipline encode deeply.

In over 170 documented bouts — the vast majority of which occurred in Thailand's most competitive domestic circuit, against fighters who would never appear on a global stage but who are technically formidable — Rodlek built a foundation that very few international fighters can claim. He competed at Lumpinee and Rajadamnern when those stadiums were the proving grounds for the sport's elite. He faced Rodtang Jitmuangnon before Rodtang became a household name. He beat Saemapetch before Saemapetch became a champion. He knocked down Kulabdam twice in a world title tournament final. His story is also, inescapably, a story about class and aspiration.

Born into rural poverty on the southern Thai island of Koh Samui, raised without electricity in a forest hut, Rodlek used Muay Thai as the vehicle by which his family's material circumstances were transformed. The fight purses he earned paid for his family's stability. The master's degree he earned while fighting in Bangkok represents a parallel ambition that is rarely discussed in the combat sports media's coverage of Thai fighters. He is not merely a warrior who happened to be educated; he appears to have pursued both tracks with equal intentionality.

“Back in the day, my dad drove me to the gym every day. Now he still comes to all my fights in Thailand, always. My father always supports me.”

The nickname 'The Steel Locomotive' captures something true about him, but it risks flattening complexity into caricature. Yes, he walks forward. Yes, he absorbs punishment and throws heavy hands. But behind the train metaphor is a man who studied management at the graduate level, who analyzed opponents' tendencies and crafted pre-fight game plans, who moved to a foreign city at fifteen to pursue a dream, and who — when his time at the sport's highest promotion concluded — transitioned into a coaching role rather than disappearing. These are not the behaviors of someone running on pure instinct. They are the behaviors of someone who thinks.

As of 2026, Rodlek P.K. Saenchaimuaythaigym remains an active professional competitor with multiple promotions across Australia and Southeast Asia. At thirty-six years of age, he is in the middle phase of what combat sports observers call the 'veteran active' period — old enough that the accumulated miles of a 170-plus-fight career register in recovery time and weight management, young enough that the technical wisdom and mental composure those miles have purchased remain fully operational assets. His coaching role at Evolve MMA in Singapore continues to offer a substantive parallel career track.

Teaching alongside world champions in one of Asia's premier training facilities places him in daily contact with the next generation of fighters, which is both professionally fulfilling and a natural continuation of the mentorship he received at PK Saenchai. The cycle of Thai Muay Thai's knowledge transmission — from experienced fighter to young student to experienced fighter again — is one of the sport's most enduring features, and Rodlek now occupies both ends of it simultaneously. Whether a return to a major promotion is forthcoming remains to be seen. The global Muay Thai landscape has continued to evolve: ONE Championship remains dominant in Asia, while promotions like MAX Muay Thai, Thai Fight, and the burgeoning international circuit continue to create opportunities for fighters who exist outside the flagship organizations.

For a decorated veteran with Rodlek's name recognition and fight IQ, bookings are likely to continue as long as he chooses to compete. The deeper question, perhaps, is what Rodlek P.K. Saenchaimuaythaigym ultimately builds with his post-fighting years. A man with a master's degree in management, over a decade of elite coaching experience, and connections spanning from Koh Samui to Bangkok to Singapore to Australia possesses rare capital in a sport that desperately needs educated, experienced, globally networked advocates.

Whether in gym ownership, promotion, fighter development, or the growing world of Muay Thai education and media, the next chapter of his story may prove as compelling as the one written in the ring. For now, the locomotive keeps moving — steadily, with mass and momentum, indifferent to what the road throws in its path. That has always been the essential truth of Rodlek P.K. Saenchaimuaythaigym: not that he never gets hit, but that getting hit never makes him stop.

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2. ONE Championship – Official Fighter Profile: Rodlek PK Saenchai Muaythaigym. https://www.onefc.com/athletes/rodlek/

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4. MuayThaiRecords.com – Rodlek PK Saenchai Fight Record. https://muaythairecords.com/fighters/rodlek-pk-saenchai

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11. Nation Thailand – 'Rodlek believes he has what it takes to beat Saemapetch.' August 12, 2020. https://www.nationthailand.com/life/30392639

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13. MMA Japan – 'Rodlek PK.Saenchai Muaythaigym Believes He's Catching Nong-O at the Right Time.' December 16, 2020. https://www.mma-japan.net/2020/12/16/rodlek-pk-saenchai-muaythaigym-believes-hes-catching-nong-o-at-the-rig ht-time/

14. Yahoo News / Malaysia – 'Rodlek PK.Saenchai Muaythaigym Not Underestimating Younger Kulabdam.' August 26, 2020. https://malaysia.news.yahoo.com/rodlek-pk-saenchai-muaythaigym-not-092755426.html

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17. ONE Championship – 'Every Rodlek Win in ONE Championship.' https://www.onefc.com/videos/every-rodlek-win-in-one-championship/