Winners of seven of their last eight, the Nationals can complete a sweep of the Marlins Thursday night.
The Orioles have placed waiver claims on two former Nats players: Michael Morse and Josh Willingham.
The top teams in the league have plenty of stars, but some of the most important players on contending teams are the ones flying under the radar.
After a rain delay cut short Wednesday night's start at only 22 pitches, Stephen Strasburg could come back to pitch again Sunday night against the Mets.
The Atlanta Braves currently hold the biggest lead of any division in Major League Baseball at 13 games.