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ONE · MMA
No champion on record.
| Champion | Won | Lost | Days |
|---|---|---|---|
| Anatoly Malykhin | 3 Dec 2022 | 9 Nov 2024 | 707 |
| Roman Kryklia | 25 Feb 2022 | 3 Dec 2022 | 281 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.