Nationals 5, Diamondbacks 4 (11 innings)

WASHINGTON -- Adam LaRoche homered with two outs in the bottom of the 11th inning to give Washington its seventh straight victory.

The Nationals dodged a bullet in the top of the 11th when the D-backs loaded the bases with none out before right-hander Craig Stammen (3-4) struck out the next two hitters and got pinch-hitter Cliff Pennington on a grounder to second.

Right-hander Will Harris (0-3), called up earlier in the day, came on for Arizona (53-72) and retired the first two Nationals (70-53) in the 11th before LaRoche hit the first walk-off homer of his career.