Tengnueng Fairtex discovered that carrying extra weight killed everything that made him dangerous, forcing the 33-year-old Thai to make drastic changes after watching size disadvantages neutralize two decades of accumulated striking wisdom.
The southpaw bomber headlines ONE Friday Fights 129 on October 17 against Myanmar’s teenage destroyer Tun Min Aung in 165-pound Muay Thai action inside Bangkok’s legendary Lumpinee Stadium, where his reinvented physique promises to unlock speed and power that disappeared when he fought too heavy.

Lightweight proved disastrous for Tengnueng’s ONE Championship ambitions. His August knockout loss to towering Maksim Bakhtin at ONE Friday Fights 121 exposed how constant height and reach disadvantages had transformed his offensive arsenal into ineffective weapons. The crushing defeat forced critical self-assessment about his fighting future.
Dropping to 165 pounds represents calculated reinvention rather than desperate weight cutting. Tengnueng plans eventually sliding to featherweight, but he’s taking the intelligent approach by shedding pounds gradually to discover his optimal form where leaner physique translates into championship-level explosiveness.
“This lighter division makes my body leaner and will help increase my speed,” he said. “Previously, when fighting in the heavier division, I had too much body fat.”

The rejuvenated fighter faces perhaps his toughest test yet. Tun Min Aung brings a 45-2-7 record built on headhunting that has overwhelmed opponents since the 19-year-old Lethwei specialist started training at just 6 years old. His recent second-round destruction of Chatpet Lampang Sports School showcased the devastating power that makes him dangerous from opening bell.
But Tengnueng has identified exploitable weaknesses in the teenage phenom’s aggressive approach. Abdelali Zahidi knocked out Tun Min Aung with a head kick at ONE Friday Fights 88, proving the youngster’s forward pressure creates defensive vulnerabilities that sharp veterans can capitalize on with proper timing.
Both southpaws carry knockout power that promises whoever lands clean first wins. Tengnueng’s own comeback victory over Germain Kpoghomou at ONE Friday Fights 108 — rallying from two knockdowns to finish the Frenchman in round two — proves his championship heart remains intact despite recent struggles.
“Right now, my confidence is 100 percent. My body is in perfect shape, and I am ready to secure the win again,” he said. “I will be absolutely fierce in the ring again.”
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