The Nationals scored three runs in the first frame and held off the Cubs for a 3-2 victory on Tuesday in the nation's capital. Roger Bernadina and Danny Espinosa both scored on a throwing error and Wilson Ramos added an RBI single for Washington, which has won three of its last four games. Ross Detwiler gave up two runs through five-and-a-third frames to pick up his first win of the season and Drew Storen closed it out for his 21st save. Aramis Ramirez' two-run homer in the sixth inning accounted for Chicago's only runs of the game. Ramon Ortiz, whose contract was purchased before the game, allowed three runs, two earned, through six innings of duty to absorb the loss. The Northsiders have dropped four-of-five. Randy Wells will toe the rubber against former Cub Tom Gorzelanny in tonight's third installment.