A native of Fort Wayne, Indiana, Saalfrank graduated from Heritage Junior/Senior High School.

[3] Saalfrank made his professional debut with the rookie–level Arizona League Diamondbacks and was promoted to the Low–A Hillsboro Hops following that appearance.

[4] Saalfrank underwent Tommy John surgery prior to the 2021 season and missed the entire year as a result.

[9] He made only two appearances for Arizona, surrendering four runs on four hits with no strikeouts in one inning pitched.

On June 4, 2024, MLB suspended Saalfrank for one year for violating the league's gambling policy.