Stewart (foot) will begin a rehab assignment at Single-A Ontario on Friday.
Stewart began facing live hitters in batting practice last weekend, and he's now been cleared to return to a competitive setting as he enters the final stretch in his recovery from a bone spur in his left foot. It's unclear exactly how long the Dodgers plan to keep the right-hander in the minors, but he could require a handful of rehab appearances after sitting out more than a month.