Diamondbacks manager Torey Lovullo told reporters Corbin Burnes suffered a setback and will be shut down from a throwing progression.
Lovullo added that Burnes suffered a teres major strain in his shoulder during a recent live batting practice session and is unlikely to return until September following the setback. The 31-year-old former fantasy ace, who was working his way back from last year’s Tommy John surgery, was on track to return to Arizona’s rotation sometime around next month’s All-Star break. It’s an extremely tough development for the Diamondbacks and fantasy managers that were stashing Burnes for a potential second-half impact. There should be a clearer return timetable once he’s cleared to resume throwing.