Zac Gallen (elbow) has started a throwing progression.

Gallen was given the green light to resume throwing after a visit with specialist Dr. Dr. Neal ElAttrache in Los Angeles. Arizona manager Torey Lovullo told reporters that Gallen has been throwing for the last couple days. The 30-year-old was shut down to undergo evaluation and imaging after hitting the injured list with elbow inflammation prior to the All-Star break.