Snell (elbow) threw off a mound to a standing catcher Saturday, Sonja Chen of MLB.com reports.
Snell has yet to throw a proper bullpen session since undergoing a NanoScope procedure May 19 to address loose bodies in his left elbow, but he appears to be on the precipice of doing so now that he's completed a flat-ground throwing progression. The left-hander will remain on the shelf through the All-Star break, but he could have a shot at returning early in the second half of the season if he experiences no setbacks while ramping up his throwing in the coming weeks.