The second game of today’s doubleheader between the Nationals and Dodgers has been cancelled due to rain and will be made up only if the Dodgers remain in playoff contention at the end of the season. Barring that shocking development, the Nationals will play only 161 games this season.

The Nationals will skip tonight’s scheduled starter, left-hander Ross Detwiler, in order to keep their rotation for the weekend intact. Stephen Strasburg will make his start Sunday at Nationals Park against the Astros originally planned, with Tom Milone pitching Friday and John Lannan starting Saturday.

Strasburg pitching Sunday keeps him on schedule to start Sept. 16 at Nationals Park, too, allowing his first three starts back from Tommy John surgery to come at home.

The Dodgers do not come back to the East Coast all season, which is why the teams will not attept to reschedule the game unless it is necessary. The Nationals have dealt with rain often this season and their game Wednesday night was rained out, too, necessitatating a doubleheader today.

“The weather has been tricky,” General Manager Mike Rizzo said. ”There’s a lot of decisions that go into cancelling a game. There are personnel decision. There are team decisions. There’s MLB decisions. I felt we did a good job of getting in as many games as we could.”