Michael Conforto laced an RBI single to right field to cap a four-run ninth inning comeback by the scorching New York Mets, who moved closer to a National League wild-card playoff berth with a stunning 7-6 win against the visiting Washington Nationals.The Mets won their seventh straight contest to at least temporarily move into the second NL wild-card spot. New York, which began the day tied with the St. Louis Cardinals and Philadelphia Phillies a half-game back of the Milwaukee Brewers, was eight games out of the second wild card 15 days ago.The Nationals, who entered Friday atop the NL wild-card standings, had a three-game winning streak snapped.The Mets trailed 6-3 entering the ninth inning, when J.D. Davis led off with a double down the third-base line against Sean Doolittle (6-4). Wilson Ramos followed with a single to center before Todd Frazier hit a homer well beyond the left-field fence and just fair.Joe Panik, who was signed earlier in the day by the Mets, followed with a single. Panik was forced at second on a bunt by Juan Lagares. After Jeff McNeil flew out to right, Amed Rosario singled to bring up Conforto, who hit a ball well over the head of drawn-in right fielder Adam Eaton to set off a wild celebration. Conforto raced beyond second base before being engulfed by his teammates, who ripped his uniform off.Luis Avilan (3-0) got the final two outs of the ninth.Anthony Rendon had an RBI triple in the fourth and a go-ahead two-run homer in the seventh for the Nationals. Juan Soto hit a two-run homer in the fourth and Trea Turner raced home on a wild pitch for what appeared to be an insurance run in the ninth.