Harvey was the starting pitcher for the 2013 MLB All-Star Game, which took place at the Mets' home ballpark, Citi Field in which he pitched the first two innings. On August 7, Harvey pitched his first career complete game shutout, giving up four hits and striking out six in a 5–0 win over the Colorado Rockies. On August 26, Harvey was diagnosed with a partial tear of the ulnar collateral ligament in his right elbow and was placed on the disabled list. He had logged innings at that point.