The Dodgers announced Thursday that Treinen (elbow) has resumed playing catch, per MLB.com.
Treinen is working his way through a throwing program after landing on the injured list June 20 due to right elbow inflammation, but the Dodgers aren't counting on him to return until after the All-Star break. Once he's activated, Treinen will likely handle a middle-innings or setup role out of the Los Angeles bullpen.