UFC heavyweight Tai Tuivasa faced a tough loss at UFC 331. He was knocked out early on. The loss came in round one. It took place after a difficult seven-fight losing streak. He had just moved to American Top Team. Tuivasa switched camps because he wanted to take advice from new trainers and tweak his preparation.

He worked out with heavyweight Francis Ngannou for UFC 331. He spent time with Ngannou during his training camp. But Tuivasa was stopped in round one anyway. The first-round defeat happened shortly after his switch to American Top Team.