PHILADELPHIA -- While the NL East champs rest up for the postseason, the Washington Nationals have plenty to play for.
With nine victories in their past 12 games, the Nationals still have a chance to set a franchise record for victories in a season. They will need to finish 8-1 to reach 82 victories, and finish with their first winning record since moving from Montreal in 2005.
"I think to compete against the best team in baseball and win two games shows the maturation process is working," manager Davey Johnson said.
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Detwiler (3-5) allowed three hits in his longest career outing. The left-hander earned his first road victory after going 0-9 in his first 12 starts away from home.
"I just focused on keeping the ball down, I felt stronger as the game went on," Detwiler said. "When you pitch with a good rhythm, it seems like the hitters don't have a good rhythm."
Lee (16-8) gave up three runs -- two earned -- and 11 hits, striking out nine in seven innings. It was his first loss since July 25.
The slumping Phillies have lost four straight since clinching their fifth consecutive division crown. It ties their longest losing streak of the season, previously done twice. They have been resting many of their regulars, however.
"I'm not worried, but I'd like to see us play better," manager Charlie Manuel said. "We're not going through the motions, but I feel we're not focused. It's normal in some respect, but you never want to see us play in a manner where we have bad at-bats and not play well."
Danny Espinosa hit his 20th home run to give the Nationals a 1-0 lead in the second. He tied the club record for homers by a rookie.
Detwiler helped himself with a two-out RBI single in the sixth. He was 2 for 41 lifetime before hitting a liner to center to score Espinosa, who singled with one out.
The Nationals got an unearned run in the seventh when catcher Carlos Ruiz tried to pick off Jayson Werth at third, but hit him in the arm with the throw. Werth, who led off the inning with a double, scored when the ball bounced into foul territory. Werth left the game with a bruised right elbow.
The Phillies haven't given Lee much support in his losses this season, scoring just 14 runs in those eight games.
Lee has allowed four earned runs in his past three starts but is 0-1 with two no-decisions.
Milone, the organization's 2010 minor league pitcher of the year, picked a perfect time to set career highs in innings and pitches (93). The left-hander allowed four hits, struck out two and walked none.
"I was moving the ball in and out," Milone said. "It was actually pretty easy. Some days, you go in and out when you're trying to throw strikes. Today, it seemed a lot easier."
"I was looking for a pitch and he left one out over the plate," said Bernadina, who tied his career high with three RBI.
The Phillies tied it in the bottom half when Raul Ibanez hit a three-run drive to right on an 0-2 pitch from Tyler Clippard. It was Ibanez's second career pinch-hit homer, the last one coming in 2001 for Seattle.
Kyle Kendrick bolstered his case for a spot on the Phillies' postseason roster with his second successive strong outing. He pitched six scoreless innings.
- Espinosa has a nine-game hitting streak. He's 7 for 10 off Lee, including three homers.
- Nationals reliever Ryan Mattheus, who missed the previous 22 games with a right shoulder strain, was activated from the 15-day DL.
- Rookie Vance Worley (11-2) will face Washington's John Lannan (9-13) on Wednesday night.