Dubin (forearm) recently resumed throwing off flat ground at the Astros' spring facility in West Palm Beach, Fla., MLB.com reports.
Dubin landed on the injured list June 24 due to a right forearm strain but has made the first step toward a return by playing catch. He'll still need to advance to throwing bullpen sessions and facing hitters before heading out on a rehab assignment, setting him up for a possible return from the injured list in late July or early August.