Pearson (illness) was removed from Sunday's rehab start with Triple-A Buffalo due to an apparent injury, Keegan Matheson of MLB.com reports.
It was Pearson's fifth rehab outing after a bout of mononucleosis in the spring delayed his availability, but he threw only two pitches Sunday before leaving the field with the training staff. The right-hander's career has been marred by injuries, and he's now potentially dealing with another issue, which could further push back his return timeline.