De Leon was reassigned to minor league camp Thursday.
Julio Urias was reassigned as well, leaving Michael Bolsinger, Brandon Beachy, and Zach Lee to compete for the final spot in the Dodgers' rotation. De Leon struck out five batters without issuing a walk in six innings with the big club this spring, but also surrendered three homers, including two in his last appearance. He had a 105:29 K:BB with 11 homers allowed in 76.2 innings with Double-A Tulsa after making the jump from High-A last season.