Wilson Ramos' go-ahead seventh inning sacrifice scored Mike Morse as the Nationals clipped the Cubs, 5-4, on Wednesday night. Danny Espinosa and Ryan Zimmerman each popped two-run homers for Washington, which has won the first three of a four-game set in the nation's capital. Ryan Mattheus worked a scoreless inning of relief to notch the win and Drew Storen tossed a 1-2-3 ninth to nail down his 22nd save. Carlos Pena and Aramis Ramirez both blasted two-run dingers for Chicago. Kerry Wood was tagged with the loss. The Northsiders have dropped five of their last six contests. Matt Garza will be on the bump opposite Livan Hernandez in tonight's series finale.