Watch The ONE Fight Night 34 Weigh-Ins And Hydration Tests
The stars will hit the scales at 6 a.m. ET/6 p.m. SGT. Make sure you don't miss it!
By Bear Frazer
Jul 31, 2025, 06:44 UTC
ONE Championship is just about ready to host the most anticipated martial arts event of the summer, but there are a few final details that need to be addressed ahead of ONE Fight Night 34: Eersel vs. Jarvis on Prime Video.
ONE Fight Night 34 will be broadcast live from the legendary Lumpinee Stadium in Bangkok, Thailand, on Friday, August 1, and the 18 Muay Thai and MMA warriors scheduled for action are eager to step into the squared circle.
However, before the action gets underway, each athlete must first weigh in and submit a hydration sample to prove they are healthy and fit to compete.
Fans can watch the official ONE Fight Night 34 Weigh-Ins and Hydration Tests live on Thursday, July 31, by clicking play on the video below beginning at 6 a.m. ET/6 p.m. SGT.
In the main event, reigning ONE Lightweight Muay Thai World Champion Regian “The Immortal” Eersel will put his coveted belt on the line against British knockout artist George “G-Unit” Jarvis.
The Dutch-Surinamese kingpin became the division’s inaugural titleholder in October 2022 and has kept the gold ever since.
Eersel, though, recently had issues with weight and hydration. He failed to make weight for his last match in April, which ultimately led to him getting stripped of the ONE Lightweight Kickboxing World Title on the scale, but he is determined to hit the mark this time and keep his Muay Thai strap.
Meanwhile, Jarvis is determined to leave Lumpinee Stadium with the belt. The Englishman earned his World Title shot on the strength of a four-bout winning streak, which includes victories over the likes of Rungrawee Sitsongpeenong and Ricardo Bravo.
The co-main event of ONE Fight Night 34 features a pivotal lightweight Muay Thai clash that could determine the division’s next World Title challenger, as Thai dynamo Rungrawee “Legatron” Sitsongpeenong squares off against four-time ISKA World Champion Youssef Assouik.
Rungrawee desperately wants to bounce back from his loss to Jarvis last November and prove he deserves another crack at the gold.
On the other side of the ring, the Danish-Moroccan star will be hunting for his 10th consecutive victory following his impressive promotional debut over former two-time World Title challenger Sinsamut Klinmee.
Plus, American grappling superstar Garry “The Lion Killer” Tonon returns to face #3-ranked featherweight MMA contender Shamil “The Cobra” Gasanov in a highly anticipated rematch.
Tonon submitted Gasanov with a kneebar in their first encounter, but both men have been on winning streaks since that July 2023 battle.
Undefeated heavyweight MMA phenom Ben “Vanilla Thunder” Tynan will also make his return, as he’ll collide with former ONE World Title challenger Kirill Grishenko.
Take a look at the full card for ONE Fight Night 34 below.
Full Card For ONE Fight Night 34
- (c) Regian Eersel vs. George Jarvis (ONE Lightweight Muay Thai World Championship)
- Rungrawee Sitsongpeenong vs. Youssef Assouik (Muay Thai – lightweight)
- Garry Tonon vs. Shamil Gasanov II (MMA – featherweight)
- Ben Tynan vs. Kirill Grishenko (MMA – heavyweight)
- Anna “Supergirl” Jaroonsak vs. Teodora Kirilova (Muay Thai – atomweight)
- Jeremy Pacatiw vs. Elbek Alyshov (MMA – bantamweight)
- Kang Ji Won vs. Ryugo Takeuchi (MMA – heavyweight)
- Suakim Sor Jor Tongprajin vs. Zafer Sayik (Muay Thai – bantamweight)
- Ellis Badr Barboza vs. Shamil Adukhov (Muay Thai – strawweight)
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