[5] In 2015, Johnson entered the USBC Masters as an amateur and earned the #1 seed in qualifying, but he would lose the final match to Jason Belmonte.
[9] Johnson settled for bronze medals in the Singles and All Events categories, finishing third in both behind teammate Prather and Brazil's Bruno Costa.
[4] In 2021, Johnson teamed with former NFL star Terrell Owens to win Chris Paul's annual CP3 PBA Celebrity Invitational pro-am event.
After knocking off American Anthony Simonsen in the semifinals, AJ topped Swedish standout Jesper Svensson in the finals.
[16] Johnson suffered his seventh career runner-up finish at the 2024 PBA Illinois Classic, losing to top seed Marshall Kent.
[17] He was a member of the Las Vegas High Rollers PBA Elite League team, which won the 2024 Elias Cup championship.