WP: Jose Acevedo (1-0)
LP: Chad Cordero (2-2)
S: Brian Fuentes (13)
WAS: 53-40 (1st in NL East, 0.5 ahead of Atlanta)
COL: 32-59 (5th in NL West, 17 behind San Diego)
The Nationals, who had been so dominant in one-run games in the first half of the season, have lost five of their last six one-run games and watched their lead dwindle to 0.5 games over the Atlanta Braves.
Colorado, who has the worst overall record and the worst road record in the National League, took a sloppy game on the road over the first place Nationals.
Each team logged three errors in the game, which was tied going into the ninth, and it was a fielding error by 3B Vinny Castilla that allowed the winning run to score.
With Eddy Garabito on second after a leadoff single and a sacrifice bunt, Aaron Miles hit a routine grounder that got past Castilla and scored Garabito.
Game two of the three game series at RFK is tonight at 7:05, with John Patterson (3-2, 2.92 ERA, throws right) going against Shawn Chacon (1-5, 4.30 ERA, throws right).
Atlanta plays the Giants tonight.