The Cubs scored nine unanswered runs and Darwin Barney clubbed a go-ahead, RBI double in the top of the ninth en route to a 10-9 win over the Nationals on Thursday night. Blake DeWitt smacked a three-run homer and Carlos Pena added a two-run shot for the Northsiders, who rallied from an 8-0 deficit to salvage the finale of a four-game set from the nation's capital. Sean Marshall was credited with the win and Carlos Marmol closed it out to nail down his 18th save. The Cubs head to PNC Park this evening to open up a three-game series against the Pittsburgh Pirates. Rodrigo Lopez will get the nod opposite James McDonald in the opener.