Although Clayton Kershaw has reported steady progress with improvement in his throwing shoulder after being temporarily shut down due to inflammation, Joe Kelly and Russell Martin have each dealt with minor back injuries of late.
Martin was held out of workouts and Cactus League games as a precaution, and he was expected to return to the lineup at the beginning of the week. However, that was pushed back to the weekend.
Due to participate in workouts on Friday, Martin may not return to game action until a couple days later, according to Bill Shaikin of the L.