Garry Tonon and ONE Championship have officially gone their separate ways, bringing an end to a long-standing relationship that spanned nearly nine years.
Tonon first appeared under the ONE banner in a grappling match, submitting Shinya Aoki with a heel hook at ONE 54.
From there, he transitioned almost entirely into MMA, becoming a consistent presence in the promotion’s featherweight division.
Over the course of his run, Tonon competed 13 times in ONE, building a strong resume highlighted by his aggressive submission style.
Outside of a grappling loss to Tye Ruotolo, his focus remained firmly on MMA after his debut.
His early career surge was particularly impressive.
Tonon opened with a 6-0 record, finishing five of those fights and earning a title shot against Thanh Le.
That opportunity, however, ended abruptly with a knockout loss in under a minute.
Despite the setback, Tonon rebounded well, securing three consecutive submission victories and positioning himself for another push toward the top.
A rematch with Shamil Gasanov followed, after Tonon had previously defeated him with a kneebar.
This time, the outcome was different.
Gasanov adjusted to Tonon’s game, and after a closely contested fight, Tonon came up short on the scorecards.
That bout, which took place in 2025, would ultimately be his final appearance with ONE.
He leaves the promotion with a 9-2 professional record and eight finishes.
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