Keaschall started his career at San Francisco, where he played at for two years earning first team all conference twice in 2021 and 2022 while additionally being named the conferences co-freshman of the year in 2021. In 2021 and 2022, he played collegiate summer baseball with the Orleans Firebirds of the Cape Cod Baseball League and was named a league all-star in 2022.[1][2] Keaschall transferred to Arizona State for his junior season where he had a .351 batting average with 18 home runs and 18 stolen bases.[3] For his efforts in his junior season he was named all Pac-12 and All American.[4][5]
Keaschall split 2024 between Cedar Rapids and the Double–A Wichita Wind Surge, playing in 102 games and batting .303/.420/.483 with 15 home runs, 48 RBI, and 23 stolen bases.[10] On August 9, 2024, it was announced that Keaschall would undergo Tommy John surgery, ending his season.[11]