Mize was invited to the Tigers' major-league spring training Thursday.
Mize reached the Double-A level in 2019, where he posted a 3.20 ERA with a 1.11 WHIP over 78.2 innings before being shut down in August due to workload concerns. The right-hander will try to prove his durability as the season progresses and could join the major-league rotation sometime in 2020.