Campbell was formerly a professional esports player and was the top-ranked Pokémon player in the world. He also worked as a standup comedian. He's currently CEO of the Dota 2 gaming team Neon Esports. His first WSOP cash came from a final table appearance in a Mixed Event at the 2013 WSOP Asia Pacific in his hometown. In 2015, he finished second in a $1,500 H.O.R.S.E. event at the WSOP. He had four prior final tables at the WSOP before 2019.