Down, 4-2, the Nationals came back and scored four runs against right-hander Miguel Gonzalez in the sixth inning. Bryce Harper led off and hit a laser into the right-field stands for his 26th homer of the season and first of his career against the Orioles to make it a one-run game.
After Clint Robinson and Wilson Ramos singled, Espinosa hit an 0-1 pitch over the right-field wall for a three-run homer.