It says they are expected to announce the times tonight so I assume it will just be Phillies and Brewers vs. TBD.
Either way all of the games are going to be in the Eastern or Central time zone and Arizona is the only team involved that is not in that time zone. So probably Houston or Texas vs. Minnesota is the very latest game (but it won't be too late). The other Texas team doesn't play in this round
Presumably Tampa-Toronto draws the short straw/early game.
But the 5/6 seeds are still not set in either league.