The Nationals got another strong start from Doug Fister, but couldn't turn that great performance into a win.
Asdrubal Cabrera joined the Nationals on Friday, one day after coming to Washington in a deadline trade.
The Nationals sent slumping reliever Aaron Barrett to Class AAA, hoping the rookie can right his ship before returning in September.
Asdrubal Cabrera has arrived and will make his Nationals debut tonight, batting seventh and starting at second base against the Phillies.
The Nationals activated Asdrubal Cabrera to their 25-man roster on Friday, one day after the infielder came over in a deadline day trade with the Cleveland Indians.