Nationals starters are primarily righties--lefty Corbin's ERA is 5.92 although it's been 4.01 in September.
So that says lefty bats--Schwarber, Verdugo, Devers, and probably Shaw--are likely to start in at least 2 games. The other four would be Kike, Bogey, Renfroe, and Vazquez.
If Corbin starts, then JDM goes to LF and Dalbec to 1b--and the other six remain the same.