UFC heavyweight Tai Tuivasa suffered a defeat at UFC 331. He was knocked out in the opening minutes. The loss happened in round one. It took place after a troubling seven-fight losing streak. He had just moved to American Top Team. Tuivasa switched camps because he hoped to take advice from new trainers and adjust his fight prep.

He trained alongside heavyweight Francis Ngannou for UFC 331. He spent several sessions with Ngannou during his training camp. But Tuivasa was knocked out in round one anyway. The first-round defeat took place following his recent move to American Top Team.