I think this is what they would do. Not 3 of the games but maybe 1 punted to October 1st. Won't matter as Cubs will have division and #1 seed locked up probably just after white sox series only 1 being punted means playing on both off days, the one in between Arizona/Chicago would be brutal given the start times, and that would also create 21 straight days with a game to end the year. I'd guess they do one between the home series and save the other 2 for if necessary at the end of the year. That said, I might have exaggerated the possibility of a rainout all 3 days, I'm probably projecting based on the forecast around here, where we're supposed to get like 6+ inches of rain starting tomorrow.