The last few nights have played out like a recurring nightmare - or September of 2007 - for us Mets fans.New York dropped game 2 of this series in Washington by a score of 4-3 (Box Score).  They have now lost 6 in a row, the longest losing streak of the year.Chris Young (L, 2-4) pitched well, allowing 2 runs in six innings, allowing 6 hits and a walk, while striking out 2.  Jordan Zimmermann (7-6) was a little better, tossing 6 shutout innings for the Nats.Once again, this game came down to the bullpens, and just like last night, neither one was anything to write home about.  Miguel Batista gave up 2 big insurance runs, while Tyler Clippard allowed 2 runs of his own in the ninth.The Nationals cracked the scoreboard first, in the sixth inning, on a 2-run home run by Adam LaRoche.  With the count 1-2, Young tried to freeze LaRoche on a backdoor slider.  However, the backdoor slider ended up coming through the front door, and LaRoche kicked it right out of the ballpark.  It was a bad pitch, but LaRoche deserves credit for his approach.  Instead of trying to pull the pitch, he took it the other way.  If he pulls it, he might have grounded out to second, instead he hit an opposite field bomb.Mets got one back in the top of the seventh when Andres Torres drove in Lucas Duda with a single to right off of reliever Tom Gorzelanny.But Batista, in relief of Young, got hit hard in the bottom of the seventh, and surrendered a 2-run double to Steve Lombardozzi, which gave the Nats a 4-1 lead.The score remained the same until the ninth, when the Mets tried to scrape their way back once again.  David Wright led off the inning with an opposite field home run against Nats' closer Clippard.  Two strikeouts later, Jason Bay pounced on the first-pitch fastball from Clippard, and smoked it into the left field foul screen for another solo home run.The next batter was pinch-hitter and Closer Killer Extraordinaire, Jordany Valdespin.  Valdespin had touched Clippard for a go-ahead 3-run homer in the ninth just the night before.  But tonight, it was Clippard who won the battle, striking out 'Spin to end the game.  Clippard gave up 2 homers in the ninth, but also struck out 3.  As ESPN announcer Dave O'Brien put it, that's entertainment.So, call it a tailspin, the other shoe dropping, the downfall, or the collapse, if you wish, but this losing streak is serious trouble for the Metropolitans.  We knew this stretch of games was going to be key, and the Mets have looked quite bad so far.  The Mets are now a full 8 games back of the Nats in the NL East.But as always, in baseball, tomorrow is another day.The Mets conclude their 3-game set with the Nationals tomorrow at 12:35 PM Eastern.  R.A. Dickey (12-1) will attempt to play the role of stopper against the very serious-looking (and very tough) Gio Gonzalez (12-4).