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Tye Ruotolo has produced one of the biggest upsets in ONE Championship history, submitting Christian Lee in the first round to capture the ONE Lightweight MMA World Championship at The Inner Circle 37 in Bangkok, Thailand, on November 6.
The 23-year-old American delivered a sensational performance at Lumpinee Stadium, stopping the experienced Singaporean-American champion with a rear-naked choke at 2:08 of the opening round. The victory marked a remarkable achievement for Ruotolo, who captured an MMA world championship in only his third professional fight.
Ruotolo also became the first athlete in ONE Championship history to win world titles in both MMA and submission grappling, adding another major milestone to an already impressive career.
Lee entered the contest as one of the promotion’s most successful fighters, holding both the lightweight and welterweight MMA championships. He was also looking to avenge his younger brother Adrian Lee’s first professional defeat, which came against Ruotolo in September 2025.
However, the challenger had other plans.
Tye Ruotolo Drops Christian Lee Before Securing Rear-Naked Choke
Christian Lee started the contest aggressively, using his jab and low kicks to establish control of the striking exchanges. The champion appeared determined to make Ruotolo uncomfortable and prevent the grappling specialist from taking the fight to the ground.
Lee also switched stances and attempted to use his experience to disrupt the challenger. However, Ruotolo remained composed and demonstrated that he was not relying exclusively on his world-class grappling ability.
The decisive sequence began when Ruotolo moved forward with a right hook followed by a powerful left hand that caught Lee on the chin and sent him to the canvas. The American immediately capitalised on the opportunity, following his opponent to the ground and advancing into a dominant position.
Lee attempted to escape the pressure, but the scramble ultimately exposed his back. Ruotolo recognised the opening and quickly secured a rear-naked choke. The champion attempted to defend the submission and fight off the grip, but the challenger had already established a tight hold around his neck. Lee was eventually forced to tap at 2:08 of the first round. It was a stunning finish against a fighter who had built his reputation as one of the most dangerous finishers in ONE Championship history.
Historic Achievement for Tye Ruotolo
The victory represents a significant moment in Ruotolo’s transition from elite submission grappling to mixed martial arts. Before entering MMA, the California-born fighter had established himself as one of the world’s leading submission grapplers alongside his twin brother, Kade Ruotolo.
Tye already held the ONE Welterweight Submission Grappling World Championship and had successfully carried his ground-game credentials into MMA. His victory over Christian Lee now places him in an exclusive category of ONE Championship athletes who have won world titles across different combat sports disciplines.
Even more impressively, Ruotolo has achieved the milestone after just three professional MMA appearances. All three of his victories have come by first-round rear-naked choke, underlining the effectiveness of his submission game.
His performance also earned him a US$100,000 performance bonus from ONE Championship chairman and CEO Chatri Sityodtong. At just 23, Ruotolo has already established himself as a major name in the organisation, and his latest achievement could open the door to even bigger opportunities.
Christian Lee Suffers Major Setback in ONE Championship
For Christian Lee, the defeat represents a significant setback after years of dominance in the organisation. The 28-year-old entered the contest with an impressive championship record and was looking to defend his lightweight title while maintaining his status as a two-division MMA world champion.
Lee had also been motivated by the opportunity to avenge Adrian’s defeat against Ruotolo. The family connection added an extra layer of intensity to the contest, with the champion openly discussing his desire to settle the score before fight night.
Lee’s experience and finishing ability made him a formidable challenge for the relatively inexperienced Ruotolo. However, the challenger demonstrated that his striking had developed enough to create opportunities against an elite MMA opponent.
The loss also raises questions about the future of the lightweight division and whether Lee will pursue an immediate rematch. Considering his achievements and previous championship success, Lee remains one of the biggest stars in ONE Championship. Nevertheless, the defeat will be a difficult one to absorb, particularly given the manner in which it happened.
What Comes Next for Tye Ruotolo?
Ruotolo’s victory has dramatically changed the ONE lightweight title picture.
Having defeated the reigning champion in such emphatic fashion, the American now has the opportunity to establish a new era in the division. His submission grappling credentials were never in doubt, but defeating an established MMA champion like Lee provides a different level of validation.
The biggest question now is whether Ruotolo can maintain his dominance against experienced lightweight contenders who will have an entire training camp to prepare for his dangerous ground game. His striking performance against Lee also suggests that opponents cannot simply focus on defending takedowns and submissions.
At 23, Ruotolo has plenty of time to develop further as a mixed martial artist. However, he has already achieved something unprecedented in ONE Championship. Tye Ruotolo arrived in Bangkok looking to become a world champion in another discipline. He left as the man who dethroned Christian Lee and made history in the process.
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what a fight!! knew this was going to happen