McCullers (shoulder) is scheduled to make a rehab start Saturday with Double-A Corpus Christi, Jake Kaplan of the Houston Chronicle reports.
McCullers is slated to throw about 60-to-75 pitches in this one after successfully making it through three innings in his first rehab start Monday. He'll continue to throw throughout the week and appears to be gearing up for a return to the Astros sometime in late April.