Atlanta activated Waldrep (elbow) from the 15-day injured list Monday and optioned him to Triple-A Gwinnett, David O'Brien of The Athletic reports.
Waldrep had been on the shelf since mid-June while nursing right elbow inflammation, but Atlanta came away convinced in his health after the right-hander tossed a pair of two-inning rehab starts between the rookie-level Florida Complex League and Single-A Augusta last week. Before being deactivated, the right-hander made two starts with Atlanta, giving up 13 runs over seven innings. He had previously made only one start with Gwinnett before being called up for his MLB debut, so Atlanta will likely have Waldrep settle in for a bit in the Triple-A rotation and find some success before considering him for a return to the majors.