McCullers (shoulder) will begin the season on the disabled list, Jose de Jesus Ortiz of the Houston Chronicle reports.
While McCullers received clean results from an MRI over the weekend, he's apparently still not overly close to returning, as he remains without a timetable. The Astros will continue to handle the situation with caution, and McCullers now figures to miss at least the first week-and-a-half of the season.