Nationals 6, Pirates 5 (11 innings)
WASHINGTON -- Pinch hitter Scott Hairston hit an 11th-inning sacrifice fly, and Washington beat Pittsburgh to complete a three-game sweep.
Jayson Werth led off the 11th with a double off the wall in left, went to third on a groundout and scored on Hairston fly.
It was the second walk-off win in as many days for the Nationals, who earned their sixth victory in a row. Pittsburgh, who blew a 5-4 lead in the ninth, lost its fifth consecutive game.