Brett Fields cut his teeth in amateur MMA where he had a very active but short career from 2017 to 2018. He made his professional debut in the BKFC where he faced the very tough and gritty Lloyd Mix at BKFC Montana in 2021. Fields fell short there but bounced back in emphatic fashion against Kaine Tomlinson two years later.

Looking to be more active, Fields hopes to string together multiple, consecutive wins and make a run in the stacked middleweight division.

Watching Fields fight, he focuses on offense much more than defense because he believes in his chin and recoverability. He can be out-thrown but remain calm and march forward as he throws a majority of his punches and full power, and to the head of his opponent.