They went cold in September and nobody cared because they had such a big lead.
Didn't change the fact that the Nats had crushed their post season opponent in the regular season and still lost to them in the playoffs.
Regular season really doesn't matter. For every example of a team winning because they got "hot at the right time" there are an equal amount of teams that backed into the post-season and won the whole enchilada.
Just win the division - (really, nobody gives a crap how)
Get to the post season as healthy and rested as you can
Set your rotation how you want it
The rest is up to the Baseball Gawds - Let the chips fall where they may ...