The most decorated fighter in ONE Championship’s striking history returns to action this Friday, April 10, when Regian “The Immortal” Eersel headlines The Inner Circle against Rungrawee “Legatron” Sitsongpeenong for the vacant ONE Lightweight Kickboxing World Title, streaming exclusively for members at live.onefc.com from Lumpinee Stadium in Bangkok.
Eersel is 33 years old and has held 10 ONE World Championships across kickboxing and Muay Thai. He won the ONE Lightweight Kickboxing World Title six times and the ONE Lightweight Muay Thai World Title four times.

The record of dominance places him firmly among the greatest strikers in the organization’s history. A high-volume Dutch-style kickboxer with an elite jab, punishing body work, and a flying knee that opponents never see coming twice, he arrives on a three-fight winning streak including a first-round knockout bonus over George Jarvis. He comes to Bangkok to add an eleventh title reign to that collection.
Rungrawee is not arriving as a grateful challenger hoping for a miracle. The 30-year-old Sitsongpeenong southpaw has lost just once in 18 kickboxing bouts, sharpened his game under Yodwicha Por Boonsit’s camp, and carries a 158-48 record built across both disciplines. His straight left and left low kick are legitimate fight-ending threats, and his footwork makes him difficult to pin down even for the best range-controllers in the division. This is the biggest fight of his career and he has earned it.
The co-main event may well steal the night. Isaac “Petnueng” Mohammed, a French-Algerian 20-year-old who won the Rajadamnern Stadium World Championship at 17 and was voted Channel 7’s Fans’ Favorite Fighter in 2025, takes on Thailand’s Rittidet Lukjaoporongtom. He’s a 21-year-old southpaw from Buriram who claimed his own Rajadamnern Stadium title at just 15.
Mohammed is a relentless fighter who walks opponents down with elbows and leg kicks and arrives on a nine-fight winning streak with five knockouts. Rittidet counters with a sharp muay femur game built around his left body kick and crisp clinch elbows.
Elsewhere, Elies Abdelali faces Hicham Zerouali in featherweight Muay Thai, Kaokarat Sor Tienpo meets Logan Chan in bantamweight Muay Thai, and Hero Marco Manguray takes on Kota Abe in a lightweight MMA bout.

The Inner Circle April 10 Full Card
- Regian Eersel vs. Rungrawee Sitsongpeenong (ONE Lightweight Kickboxing World Championship)
- Isaac Mohammed vs. Rittidet (Muay Thai – strawweight)
- Elies Abdelali vs. Hicham Zerouali (Muay Thai – featherweight)
- Kaokarat Sor Tienpo vs. Logan Chan (Muay Thai – bantamweight)
- Hero Marco Manguray vs. Kota Abe (MMA – lightweight)
READ MORE: Jake Paul Opens Up On Fighting Logan Paul In Boxing And MMA







