Astros manager Joe Espada said Saturday that McCullers (shoulder) has resumed throwing off a mound, Brian McTaggart of MLB.com reports.
McCullers is being eased along slowly in his throwing program after landing on the shelf May 19 due to right shoulder inflammation. He still looks to be multiple weeks away from a return, as he'll need to complete multiple bullpen sessions and face live hitters before being cleared to head out on what will most likely be a multi-start minor-league rehab assignment. With both Hunter Brown (shoulder) and Cristian Javier (shoulder) poised to beat him back from the injured list, McCullers may not have a rotation spot waiting for him upon his activation. The 32-year-old righty struggled to a 6.86 ERA and 1.53 WHIP over 39.1 innings in his eight starts before hitting the IL.