Choi begun practicing martial arts at the age of eight, eventually representing South Korea in the Muay Thai World Championships.
[1] Choi started his professional MMA career since 2015 and fought under various promoters primary in Asia.
[7] Choi made his promotional debut on April 20, 2019, at UFC Fight Night: Overeem vs. Oleinik as a short notice replacement[6] against Movsar Evloev.
[13] Choi was expected to face Youssef Zalal on October 11, 2020, at UFC Fight Night 179,[14] but was pulled from the bout due to an undisclosed reason and was replaced by Ilia Topuria.
[16] In turn, Peterson pulled out on January 15 due to an injury and was replaced by promotional newcomer Collin Anglin.
[17] In turn, Anglin was pulled from the event for undisclosed reason and he was replaced by Youssef Zalal.
[37] Choi is scheduled to face promotional newcomer Kevin Vallejos on March 15, 2025 at UFC Fight Night 254.