Hopefully you brought your umbrella to Nationals Park last night — these lucky folks didn’t have to run for cover.Brewers 7, Nationals 3: The Nats couldn’t really get the offense going, and dropped their fourth straight decision. Adam Dunn did smash his 32nd home run of the season, and Ryan Zimmerman added a solo blast in the ninth. But it wasn’t enough to overcome some very poor hitting by the bottom of the order — five hits in total just isn’t going to cut it. It’s a concerning trend for the Nationals, especially as they can I’ll afford to waste solid pitching performances like the one J.D. Martin delivered. Martin (2-3), though far from fantastic, was generally under control: four runs in 6.2 innings, which could have been even better if the Nats had a couple of close calls go their way. Normally, this kind of pitching performance would put Washington in a good position to win. However, Braden Looper (11-6) was dynamic aside from the Dunn homer, and Jorge Sosa looked plain awful in a seemingly interminable top of the ninth, allowing three runs. The weather certainly didn’t help matters much — rain fell over the game for most of the evening. (But it was nice and sunny for the introduction of one young Mr. Strasburg. Coincidence? We think not.)