McCullers (elbow) still hasn't progressed to throwing off a mound, the Houston Chronicle's Angel Verdejo reports.
He increased his throwing velocity and distance to 120-130 feet Friday, but the fact that he has not returned to a mound yet suggests he's probably at least a couple weeks from being able to return to the big league rotation. Dallas Keuchel is also without a timetable to return, so the likes of Joe Musgrove, David Paulino and Brad Peacock will continue to plug the holes in the rotation.