Mohammad Siasarani’s Evolution From Gritty Warrior To ONE Championship Contract-Winning Finisher
Raw toughness defined Mohammad Siasarani’s early ONE Championship performances — walking through punishment, absorbing damage, testing himself against anyone placed across the ring regardless of reputation or danger. Yet that unpolished aggression represented only the foundation for what the 23-year-old Iranian would eventually become through years of refinement inside ONE Friday Fights’ featherweight divisions.
His transformation from gritty crowd-pleaser into composed finisher culminated at ONE Friday Fights 137 on December 19 when a clean second-round combination shut down former world title challenger Jo Nattawut, earning the Team Mehdi Zatout representative the coveted US$100,000 main roster contract that every Asia primetime warrior chases through victories, setbacks, and constant evolution.
The journey began at ONE Friday Fights 2 in January 2023 against Avatar PK Saenchai in featherweight Muay Thai, where Siasarani showed fans exactly what kind of fighter he was — durable, aggressive, unafraid of pressure. He absorbed heavy offense while staying composed under fire, pushing forward relentlessly to earn a hard-fought majority decision victory built entirely on resolve rather than technical refinement.
Four months later came a pivotal adjustment when Siasarani crossed over to kickboxing against highly touted Moroccan prodigy Mohammed Boutasaa — a matchup many viewed as step too far, too soon. Instead, he delivered one of the year’s most surprising performances using deception and patience, deliberately dropping his guard to draw counters before responding with cleaner, heavier strikes that secured a unanimous decision, sending a message to global fans that he was more than just a tough fighter.
Momentum followed him back to Muay Thai at ONE Friday Fights 26 in July against Thai standout Satanfah Sitsongpeenong. Despite being dropped in the opening round, Siasarani responded immediately with a sharp counter right hand, scoring a knockdown of his own before pouring on pressure and closing the show with a barrage of punches — the moment marking a clear leap in confidence and finishing instinct.
His rise continued at ONE Friday Fights 32 where Siasarani entered as an underdog against legendary striker Sitthichai Sitsongpeenong. He dropped the Thai icon in the second round, absorbed everything that came back without flinching. He also controlled the tempo down the stretch earning a unanimous decision. By year’s end, Siasarani had authored one of the most impressive breakout runs in the weekly series.
Yet 2024 forced a confrontation with reality at the elite level. Shadow Singha Mawynn applied suffocating pressure at ONE Friday Fights 81 in September, mixing strikes to disrupt Siasarani’s rhythm while a crushing liver shot dropped the Iranian who showed trademark toughness by rising to his feet. Despite his resolve, he couldn’t swing the momentum back, suffering his first promotional defeat via unanimous decision.
Two months later at ONE Friday Fights 89 against Khunsuek Superbon Training Camp, Siasarani endured a head-kick knockdown early in the second round yet fought through to the final bell before another unanimous decision went against him. Those back-to-back losses stalled his momentum and exposed areas needing refinement. But rather than breaking him, the setbacks reshaped him completely.
Siasarani answered those lessons with composure in 2025, returning to kickboxing at ONE Friday Fights 105 against Liu Mengyang. He was a surging force riding a dominant win over former K-1 Champion Masaaki Noiri and carrying a 21-fight winning streak. Under pressure, Siasarani showed patience and control, matching Liu’s pace and output before edging a razor-close split decision that remains the only loss Liu has suffered in ONE Championship.
That performance was followed by two more kickboxing victories over Japanese striker Kaito Ono and Polish athlete Oskar Siegert in May and August respectively, both by unanimous decision, reinforcing Siasarani’s ability to handle stylistically diverse opponents.
Then came the defining moment at ONE Friday Fights 137 when he returned to Muay Thai against Jo Nattawut — this time there was no drawn-out battle as a clean second-round combination shut the door decisively, earning him the life-changing contract through resilience, adaptation, and increasingly decisive finishes.
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