Pound-for-pound kickboxing great Marat Grigorian debuted with a thrilling body shot knockout of two-time Russian Kickboxing Champion Ivan Kondratev in the main event of ONE: BIG BANG! Subscribe to ONE Championship on YouTube: http://bit.ly/ONECHAMPIONSHIP Connect with ONE Championship: ONE Super App: http://bit.ly/ONESuperApp Website: https://onefc.com/ Facebook: https://www.facebook.com/ONEChampionship Twitter: https://twitter.com/ONEChampionship Instagram: https://www.instagram.com/ONEChampionship TikTok: https://www.tiktok.com/@onechampionship