I think this is a huge 4 game set coming up for the Nats. If can go 3-1, Nats only 2.5 behind the Braves- with 15/47 games left with losing teams(to only 11/50 games for Braves). While these 2 are playing-
LA gets 2 with suddenly looking really good Oakland
Philly/Arizona play each other for 3 games
Pittsburgh/Colorado play each other for 3 games
LA/Colorado play on Thursday vs each other in start of their 4 game set.

So this could be a great period for the Nats. If they can take care of business they will make up some ground on someone(s).