I would have accepted a 4-6 road trip at the start of it (was really expecting 3-7). Obviously after the three straight wins it was natural to want more but in addition to the possibility that Arizona gives us trouble, the wear of the road trip itself probably caught up with them.
And while the Phillies went 4-6 the Braves went 3-7 and the Mets 4-6. Dodgers and Brewers 6-4. I'm sure none of these teams looked pretty in their losses either, though that also depends whether you find an unwinnable game uglier than blowing a game you should have won.
It would still take an epic swoon - and a hot streak the other two teams might not have in them - for the division to be in play. But they will be tested for the rest of August and the first half of September (if the Mets are close). Hopefully they will bank a few at the Bank first against the two lesser teams.
Personally, if I am Taijuan Walker I still see an opportunity to beat out Sanchez for a playoff start. No reason to think he's actually capable of doing that at the moment, but he has a chance to show otherwise, and the bar (Sanchez's performance away from CBP) isn't that high. As it is Sanchez will either be out of the pen or off the roster in the NLDS (though depending how things proceed, they could also line him up to start a home game in the NLCS which would help).