UFC heavyweight Tai Tuivasa suffered a setback at UFC 331. He was knocked out in the opening minutes. The loss happened in round one. It came after a difficult seven-fight losing streak. He had newly linked up with American Top Team. Tuivasa switched camps because he hoped to take advice from new trainers and change his fight preparation.

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