Blair began his collegiate career at Palm Beach Atlantic University, where he spent two seasons primarily as a third baseman before transferring to Ave Maria University for his final two seasons. In 2024, he hit .327 while driving in 41 runs.

In 2025, Blair transitioned into a two-way role, making 15 appearances on the mound while posting a 5.50 ERA. Following his collegiate career, he appeared in eight games as a right-handed pitcher for the Williamsport Crosscutters in the MLB Draft League, where he recorded a 5.40 ERA.