ONE Fight Night 21: Eersel vs. Nicolas was a combat sport event produced by ONE Championship that took place on April 6, 2024, at Lumpinee Boxing Stadium in Bangkok, Thailand. A ONE Lightweight Kickboxing World Championship bout between current champion (also current ONE Lightweight Muay Thai World Champion) Regian Eersel and Alexis Nicolas headlined the event.
Alexis Nicolas
Regian Eersel
Tye Ruotolo
Izaak Michell
Suablack Tor.Pran49
Vladimir Kuzmin
Ben Tynan
Duke Didier
Denis Purić
Jacob Smith
Kade Ruotolo
Francisco Lo
Dedduanglek Tded99
Taiki Naito
Hiroyuki Tetsuka
Valmir da Silva
Songchainoi Kiatsongrit
Nicolas Leite Silva
Jeremy Pacatiw
Wang Shuo