Howard powers Phillies over Nationals 11-3

Nats' Danny Espinosa can't handle the grounder and is charged with an error.

PHILADELPHIA (AP) - Ryan Howard homered and drove in four runs and Roy Oswalt pitched seven solid innings to lead the Philadelphia Phillies to an 11-3 victory over the mistake-prone Washington Nationals on Saturday.

Oswalt (5-7), making his second start since coming off the 15-day DL Aug. 6 with a back injury, gave up three runs on six hits in seven innings. He also earned the victory in his last start despite tying his career high by allowing 12 hits in a 3-1 win at San Francisco Aug. 7.

The Nationals committed three costly errors that led to seven runs.

John Lannan (8-8) surrendered seven runs, but just one earned run, in three innings on four hits while walking five and striking out one. He did not come out to pitch the fourth due to a possible injury.