Oumar Kane
ONE Championship
Kane made his promotional debut against Alain Ngalani on January 22, 2021, and aired on January 29, 2021, at ONE: Unbreakable 2. He won the fight via technical knockout in the first round.
ONE Championship
Kane was scheduled to face Mehdi Barghi on April 7, 2021, at ONE on TNT 1. However, Barghi pulled out due to health and safety protocols. Patrick Schmid, who scheduled to face Rade Opačić in a kickboxing bout replaced to meet in a MMA bout. He won the fight via technical knockout in the first round.
ONE Championship
Kane faced Kirill Grishinko on April 28, 2021, at ONE on TNT 4. Just as the bell sounded in round two, Grishenko landed a throat punch. Kane seemed to protest what might have been considered a late blow, then dropped to his knees holding his throat. He did not get back up, and was unable to answer the bell for round three. He lost by TKO in round two.