WASHINGTON -- Stephen Strasburg pitched eight innings of five-hit baseball and the Washington Nationals broke open a scoreless game with five runs in the seventh and defeated the Philadelphia Phillies 6-1 Sunday at Nationals Park.
Strasburg (3-5) struck out a season-high nine batters and didn't walk a batter while hitting one and allowing an earned run. He lowered his ERA to 2.49 and has allowed two earned runs or less in eight of 11 starts this season.
Philadelphia (24-26) had won eight of 12 coming in and missed its second chance in three days to even its record and pull into a second-place tie with the Nationals (26-24).
The teams combined for just six hits (including two by Strasburg and one by Phillies starter Cole Hamels) through six innings.
In the seventh, Ryan Zimmerman led off with an infield single off Hamels (1-8) and Adam LaRoche (two hits) followed with a single. After Ian Desmond sacrificed both runners over, Tyler Moore was walked to load the bases.
Jhonatan Solano then hit a slow roller toward third. Michael Young's throw to the plate was low and bounced past catcher Humberto Quitero as Zimmerman slid into his left leg and LaRoche came in to score as well.
Steve Lombardozzi followed with a double, scoring Moore and Solano and ending Hamels' afternoon. Denard Span doubled off reliever Justin De Fratus to score Lombardozzi and complete Washington's highest scoring inning of the season.
After Hamels singled to start the Philadelphia third, Strasburg retired 10 straight, six on strikeouts, before Freddy Galvis singled in the sixth. Galvis was erased on a double play and Strasburg struck out the side in the seventh.
The Phillies scored in the eighth when Strasburg was called for a balk with Ben Revere on third.
Strasburg left after throwing 112 pitches.
Hamels allowed five runs, three earned, while striking out six and issuing an intentional walk
He continues to be a victim of poor run support. Over his last nine starts, the Phillies have scored just 13 runs while he's been in and he hasn't pitched with the lead since April 7.
NOTES: 1B Kevin Frandsen started in place of Ryan Howard and was hit in the chest with a pitch while attempting to bunt in the second. In the fourth, he was ejected by plate umpire Mike Winters after slamming his bat to the ground when Winters called him out on a check swing. ... Bryce Harper's left knee, injured when he crashed into the wall at Dodger stadium May 13, appeared to be bothering him during the game. He slid hard into second and third in the first inning. After he walked in the seventh, Roger Bernadina pinch ran. ... Phillies RHP B.J. Rosenberg was optioned to Triple-A Lehigh Valley to make room for RHP Mike Adams, who returned from the disabled list. ... RHP Tyler Cloyd (1-0, 2.70) starts for the Phillies against Clay Buchholz (7-0, 1.73) when they open a series at Boston Monday. Gio Gonzalez (3-2, 3.66) opposes Baltimore's Jason Hammel (6-2, 5.37) as Washington hosts the Orioles on Monday.