Stewart (shoulder) was activated from the disabled list and optioned to Triple-A Oklahoma City on Wednesday.
Stewart is set to rejoin Oklahoma City after making two rehab appearances there, allowing two runs while striking out nine and walking none through five innings. He's behind a decent amount of pitchers in the pecking order right now, but given his previous success in the upper levels of the minors, he may be worth keeping an eye on in case the Dodgers' pitching staff encounters a few injuries. Stewart will take the roster spot of Chris Heston, who was claimed off waivers by the Twins on Wednesday.