Mesa Solar Sox
On July 31, 2019, the Cubs traded Lange and Paul Richan to the Detroit Tigers in exchange for Nicholas Castellanos. He was assigned to the Erie SeaWolves. Over 27 games (18 starts) between Myrtle Beach and Erie, he went 5-13 with a 5.45 ERA, striking out 94 batters over innings. He was selected to play in the Arizona Fall League for the Mesa Solar Sox following the season. The Tigers added Lange to their 40-man roster after the 2020 season.