Choi signed with the San Francisco Shock for the inaugural season of the Overwatch League (OWL).

Choi was part of X6-Gaming's APEX Challengers Season 3 Championship team, where he mainly played as the tank character D.Va.

The team fell to the Atlanta Reign in the first match of the playoffs, dropping them to the lower bracket of the tournament; after four consecutive wins in the lower bracket, the Shock made it to the 2019 Overwatch League Grand Finals, where they faced the Vancouver Titans.

[5] In the 2020 season, Choi alternated between playing D.Va and Sigma, due to the league introducing hero pools, a weekly system where characters are banned from play;[3] Choi won two midseason tournaments with the Shock – the May Melee and the Countdown Cup.

[6] Choi was nominated for the league's regular season most valuable player award and selected to play in the 2020 All-Star Game.