Are the Nationals officially out of the pennant race in 2013? No.
You could point to Stephen Strasburg's inability to hold a runner on first base, a recurring problem that led to an early run.
Despite scoring a run in the first inning to give Stephen Strasburg a cushion, the bats went silent thereafter in a 3-2 loss to Atlanta.
Bryce Harper noted a few days ago that the Nationals still have nine games left this season against the Braves and therefore "this [thing] ain't over."