McCullers (shoulder) got some good news Saturday when his MRI came back clean, but he has no timetable to return to the mound, Brian McTaggart of MLB.com reports.
The Astros have repeatedly said and demonstrated they are going to be cautious with the health of their young right-hander, so they probably aren't going to rush him back, even with a clean MRI. Whether or not this affects McCullers' Opening Day readiness remains to be seen, so keep an eye out for when he returns to camp.