The Nationals wrap up their three-game series with the Red Sox on Wednesday, as well as a stretch of 20 games in 20 days, at Fenway Park.
Washington is 10-9 thus far through the stretch, despite winning eight of the first 10 games.
Right-hander Shawn Hill will take the mound looking to ensure Washington of a plus-.500 mark over the last 20 days. Hill has worked at least six innings in each of his starts this year.
Left-hander Jon Lester is on the mound for the Red Sox as they look for the sweep. Lester will be making the third start of his career.
WAS: RHP Shawn Hill (1-1, 2.42)
Hill has not given up more than four runs in a game this season.
BOS: LHP Jon Lester (1-0, 3.48)
Lester has not given up a home run in his Major League career.
Player to watch
None of the Nationals have had an at-bat against Lester.
On the Internet
Official game notes
WASH: Washington Post Radio AM/FM
Friday: Washington (RHP John Patterson, 1-0, 3.86) at Baltimore (RHP Rodrigo Lopez, 4-8, 6.85), 7:05 p.m. ET
Saturday: Washington (RHP Ramon Ortiz, 5-5, 5.27) at Baltimore (TBA), 4:35 p.m. ET
Sunday: Washington (Livan Hernandez, 5-7, 5.64) at Baltimore (TBA), 1:35 p.m. ET
Michael Walsh is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.