Legends Collide 10 Rounds Between Regian Eersel & Nieky Holzken

Before two-sport king Regian Eersel defends his ONE Lightweight Kickboxing World Title against unbeaten phenom Alexis Nicolas in the main event of ONE Fight Night 21 on Prime Video, relive both his epic World Title battles with kickboxing great Nieky Holzken! #ONEFightNight21 | Apr 5 at 8PM ET 🇺🇸🇨🇦 Watch Live on Prime 🇬🇧🇮🇪 Watch Live on Sky Sports 🌍 Live TV broadcast in 190 countries (check local listings) 🌍 Also available on ONE YouTube and ONE Facebook (geo-restrictions may apply) 🌍 Also available on (geo-restrictions may apply) 🎟️ Tickets 👉 Follow the athletes on Instagram: Regian Eersel: Mustapha Haida: Subscribe and turn on notifications to get the latest ONE content: To watch ONE events in most regions, visit: To watch ONE events in the U.S. and Canada visit: To shop official ONE gear, visit: To download the ONE Super App, visit: Connect with ONE Championship online and on social: Website: Facebook: Instagram: TikTok: @onechampionship X: Threads: @onechampionship Snapchat: @ONEChampionship #ONEFightNight21 #ONEChampionship #WeAreONE