As if the usual horde of Philadelphians and assorted bandwagoners outnumbering the Nats fans in DC weren't enough, they found a way to impose themselves on the action. After Danny Espinosa's home run in the fifth landed in a section of Phillies fans, one chucked the ball back on to the field as if it were a visitor's.

Phillies fan throws back Danny Espinosa's home run ball at Nationals Park [Nats Enquirer]
Scenes from a Philly invasion of Nats Park [DC Sports Bog]