A first professional defeat has a way of sharpening a fighter’s edges, and Kiamran Nabati wants to show exactly what that sharpening looks like this week.
The Russian powerhouse meets Thailand’s Nontachai Jitmuangnon in a bantamweight Muay Thai main event at The Inner Circle 31, streaming live from Bangkok’s Lumpinee Stadium this Friday, September 18.

Nabati built his name with one of the most destructive unbeaten runs the weekly platform has seen, highlighted by a contract-earning first-round knockout of Suablack Tor Pran49 and a unanimous decision over the legendary Nong-O Hama. That run ended with a split-decisionloss to newly minted ONE Bantamweight Muay Thai World Champion Yod-IQ Or Pimolsri, his first professional defeat.
That setback has reshaped how Nabati approaches every detail of fight week, and he steps into Friday’s bout with a clear sense of what needs correcting.
Nontachai enters off the best result of his ONE career, a unanimous decision win over Felipe Lobo that followed a third-round TKO of Semih Sah Cindir. The Jitmuangnon Gym product won his ONE contract by taking the Road to ONE: Thailand tournament with a first-roundknockout in the final.
Tall, technical, and capable of making even elite fighters look ordinary on his best nights, Nontachai represents the kind of live opponent that leaves no margin for a repeat mistake. A win over a contracted Russian powerhouse in his prime would be the definingresult of Nontachai’s career so far, and he arrives in Bangkok knowing exactly what is at stake.

For Nabati, the equation is simpler but no less demanding: erase the memory of his first loss with a finish decisive enough to silence any lingering questions.
The co-main event carries its own redemption arc. Yamin PK Saenchai, who opened his ONE account with knockout wins before running into consecutive losses, faces durable Belarusian veteran Alexey Balyko in bantamweight kickboxing, with both men in search ofa result that puts them back in the conversation.
Friday’s card in Bangkok offers no shortage of fighters looking to rewrite their own recent history, and Nabati intends to be the first to do it.
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