R.A. Dickey's bid for win 19 sailed over the wall at Citi Field with a go-ahead two run, pinch hit homer to Tyler Moore as the Washington  picked up a 5-3 win over the Mets.

It was the rookie outfielder's ninth dinger of the year, and Washington's 88th win - the most franchise has seen since 1996, when the Montreal Expos finished 88-74.

Dickey (18-5), who is second in the National League is K's, got just two strikeouts on Tuesday, while allowing three runs on eight hits over seven innings.

Trailing 1-0 in the fifth, Daniel Murphy put the Mets on the board with an RBI double off starter Jordan Zimmerman, then came around to score on David Wright's single that gave New York at 2-1 advantage.

Tom Gorzelanny (4-2) was credited with the win in his scoreless inning in relief of Zimmerman - who allowed two runs through five innings.

Tyler Clipper allowed a solo homer to Scott Hairston (17) in the bottom of the ninth before earning his 31st save.

Bryce Harper had four hits on the night including an RBI single in the Nats' two-run ninth.