Last year, the 4 games in one day were at 1:00 PM, 3:00 PM, 6:00 PM and 9:30 PM.
The 9:30 game is almost certainly going to be Cardinals v Dodgers. The Angels won't get the 1:00 slot, so I expect the 3:00 game to be Anaheim, regardless of who they play.
If the Giants win, I think the Nats will get the 6:00pm slot. Not sure what happens if the Pirates win.