Yankees manager Aaron Boone said Friday that Donaldson will likely be out for a couple of weeks with a Grade 1-plus strain in his right hamstring, Chris Kirschner of The Athletic reports.
Donaldson had to cut short his rehab assignment Wednesday after experiencing a setback. It's unclear if the Yankees will send him on another assignment once he's feeling better, but his return to the majors has been pushed back well into May, at the least.