Joe Frisaro gives some more information about the doubleheader scheduled for Wednesday.
The first game between the Marlins and Diamondbacks is slated for 5:10 p.m. ET, and there will be a 30-minute window between games.
Sounds like to me if you have a ticket for Wednesday's game, you get to see both games. Especially since I don't think they could clearout the stadium and get everyone back-in, in only thirty minutes.
So that would be 17 innings of Marlins baseball in one day for one low price. (I'm counting on two 8 1/2 innings games.)