 On May 11, 2019, Adleman's contract was purchased by the Detroit Tigers and he was assigned to the Triple-A Toledo Mud Hens.Adleman pitched to a 9-4 record with a 3.32 ERA, which would have been best in the International League had he qualified for the pitching statistic leaderboard.He struck out 119 batters and finished the season with a 1.15 WHIP.