Holmes (fibula) has been throwing on flat ground and is expected to progress to mound work next week, Chelsea Janes of SNY.tv reports.
The veteran right-hander underwent a follow-up X-ray last week that came back clean, clearing the way for him to ramp up his rehab work while recovering from a fractured right fibula. Holmes will now need some time to build his arm back up and is likely looking at a return in late July or early August.