Buehler will take the hill Tuesday for High-A Rancho Cucamonga, Ken Gurnick of MLB.com reports.
Buehler was optioned to the minors after a poor outing against the Cubs, as he surrendered five runs in just one inning of work. The Dodgers hope to stretch him out in the minors, with a possible return to the big club in mid-July if he performs as expected.