Diaz delivered a scoreless seventh inning during the first game of Thursday's doubleheader against the Nationals to earn the save. He gave up one hit and had zero strikeouts or walks.
Diaz also delivered a scoreless frame Wednesday to record a save, so he's unlikely to be available for the nightcap of Thursday's twin bill. The right-hander has converted six straight saves and has a 2.57 ERA in eight innings since blowing three consecutive save chances in mid-July.