You can pretty much write this one off as a lost cause at this point. The Nationals gave up another three runs in the sixth, facilitated in part by Wil Nieves’ throwing error, and lead 8-2.
Nieves was trying to gun down Carlos Beltran at second base when he short-hopped a throw that got past Alberto Gonzalez and skipped into center field, allowing Daniel Murphy to score. That, plus a David Wright walk off Jason Bergmann and a Ryan Church single off Saul Rivera, helped the Mets score three in the sixth, though all of the runs were earned.
Washington, meanwhile, had no answer for Mike Pelfrey, who is out of the game now after allowing two runs in 5 2/3 innings. They managed a small rally in the sixth, getting a pair of hits to start the inning before Adam Dunn hit into a double play. Elijah Dukes hit a low liner to center that dropped under the glove of a sliding Daniel Murphy (yes, it does happen to other teams) that scored Nick Johnson, but Dukes got stuck at third to end the inning.