Philadelphia and interim manager Rob Thomson took three of four from the worst-in-the-majors Nationals to improve to 86-73 after getting to town on a five-game losing streak.
Starting Monday, Philadelphia heads to Houston, and Milwaukee hosts Arizona. The Phillies hold the tiebreaker over the Brewers if they finish with identical records.
Fans opened umbrellas during a downpour that began in the third inning, and bundled up against a temperature in the 50s. They watched players slip on the slick edge where the muddy infield met the grass or navigate puddles - pools, really - along the warning track.fell and couldn't make a play on what normally would have been a routine bouncer. That helped Washington get a run in the sixth; when that inning ended, the tarp was pulled out.
The righty had seven strikeouts and no walks and allowed just two hits. Since returning after a month on the injured list with right forearm tendinitis, Wheeler has given up one run and nine hits in 15 innings across three starts. Stott delivered an RBI groundout in the second inning and a two-run double in the fourth, while Schwarber - who homered twice Saturday to take his NL-leading total to 44 - added a three-run single in the fifth.