Mets get 17 hits in 11-3 win over NationalsZack Wheeler allowed two runs and five hits over 6 2/3 innings
Eric Young Jr., Daniel Murphy, Josh Satin and Juan Lagares had three hits apiece for New York, which scored 11 runs for the second time in three days and won its third straight.
The news wasn't all good for the injury-riddled Mets, though. First baseman Ike Davis left with a strained muscle on his right side after hitting a sacrifice fly in the third.
Wheeler (7-3) allowed two runs and five hits in 6 2-3 innings, striking out three and walking one. Since the start of July, the touted rookie is 6-2 with a 2.96 ERA.
The Nationals, who began play 6 1/2 games behind Cincinnati for the second NL wild card, have lost the first two games of the series.
Denard Span had three hits for Washington, extending his hitting streak to 14 games.
Dan Haren (8-12) allowed seven runs and nine hits in 2 2-3 innings, his shortest start of the season.
The Mets have won 10 of Wheeler's 14 starts, and he improved to 5-0 with a 2.19 ERA on the road.
Haren, who had been pitching well since a stint on the disabled list, has given up 11 earned runs over 9 2-3 innings in his last two starts.
The Mets got two off Haren in the second. With one out, Travis d'Arnaud and Lagares singled. After Haren fanned Matt den Dekker, Omar Quintanilla hit a drive to right-center just beyond the reach of a diving Span for a two-run double.
In the third, the Mets sent 11 batters to the plate. Young led off with a single, stole second and scored on a single by Murphy. With Murphy running, Satin singled to left, putting runners on first and third.
Davis drove in Murphy with a sacrifice fly to make it 4-0. After d'Arnaud singled, Lagares singled to right, and Jayson Werth's throw to the plate cut down Satin. But den Dekker followed with his first major league hit, a single that scored d'Arnaud and ended Haren's night.
Consecutive walks, the second one to Wheeler, forced in a run, and Young capped the inning with a two-run single to make it 8-0.
Washington got two back in the sixth on Werth's sacrifice fly and Ian Desmond's RBI single.
NOTES: Lucas Duda replaced Davis at first base. New York already is missing All-Star third baseman David Wright, closer Bobby Parnell and several starting pitchers due to injuries - including young ace Matt Harvey. ... Desmond added his 34th double of the season, a career high. ... Nationals manager Davey Johnson was back in the dugout one night after leaving in the fourth inning due to dehydration. ... Johnson said he would speak to Bryce Harper regarding Harper not hustling after hitting a grounder to second in the eighth inning of Friday night's 3-2 loss. Johnson added that Harper might be favoring his left knee, which he injured earlier this year. Harper missed 31 games due to bursitis in the knee and Johnson said minor offseason surgery to remove a bursa sac is an option. ... Young stole a base for the fourth straight game. ... LHP Jonathon Niese (6-6, 3.69 ERA) opposes Washington RHP Ross Ohlendorf (2-0, 2.58) in the series finale Sunday night.