Mountcastle should be close. When he is called up he probably plays everyday. Smith has found some power in left. Nunez playing some 1B. Severino and Sisco both hitting thick could make one of them the DH. Holaday being on the roster allows a catcher to DH.
Diaz is not even on the 40 man. I don't expect to see him in the majors this year.
The decisive play was the ball that Valaika muffed, leading to Smith's error. With a man on first and nobody out, Valaika missed the ball going by him. It was hit hard to his left but looked like a clean hop that he just missed. Would have at least got the lead runner and could have been a double play. Instead they got 1st and 3rd with nobody out, and both runners scored to put the Marlins ahead for good.