PHILADELPHIA -- The celebration in the St. Louis clubhouse showed just how excited the surging Cardinals are to be in the thick of the playoff chase.
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Lance Berkman had a home run and an RBI single for the Cardinals, who moved within 2½ games of the wild card-leading Braves.
Moments after Octavio Dotel closed out the Cardinals' victory, Atlanta lost 6-5 at Florida on Omar Infante's two-run homer off Craig Kimbrel with two outs in the bottom of the ninth inning. The Cardinals, who were watching the game on television, burst into loud cheers that reverberated around the clubhouse.
"To win our game we're already pretty happy, and to see that, that was big," Lohse said.
Cardinals manager Tony La Russa, who was tuned to the Rams-Giants NFL game in his office, smiled when he heard the news.
"This is what the pennant race is all about," La Russa said. "This is what you try to sell in spring training. This is the fun of it. It's part of the fun of being in contention in September."
St. Louis, which took three of four in the series, has won 10 of 12 overall.
Despite the loss, the NL East champion Phillies clinched home-field advantage throughout the postseason when Milwaukee lost to the Chicago Cubs 5-2.
Lohse (14-8) tossed 7 1/3 strong innings, allowing an unearned run and seven hits while striking out five and walking one.
"I thought Lohse was outstanding," La Russa said. "You just can't give him enough credit. We had our best defensive team out there and we kicked it around. He picked everybody up all day."
The Cardinals, who made a pair of errors, have nine games remaining and return to St. Louis for a six-game homestand that begins Tuesday against the Mets.
Atlanta has eight games left, including the final three against the Phillies in Atlanta.
"We've had our backs up against the wall for a long time now," Lohse said. "Every series has been tough. We knew coming in here was going to be really tough. To take three out of four was huge. We've just got to keep it going."
The Phillies lost their second straight since clinching their fifth consecutive NL East title on Saturday. Philadelphia played most of its regulars, with only Ryan Howard getting the day off after receiving an anti-inflammatory injection in his left ankle. Howard is expected to miss a couple of days.
The Phillies (98-54) remained four victories shy of setting a franchise record for wins in a season.
"We came out a little flat, but that's not going to last," manager Charlie Manuel said. "We'll be ready."
Phillies hitters have been in a bit of a lull lately. Philadelphia has scored three runs or fewer in 10 of its past 11 games, averaging 2.5 runs while going 5-6.
"I'm looking for our offense to pick up," Manuel said. "We've got to start scoring some runs before we go into the playoffs."
Halladay (18-6) had won seven consecutive September decisions and was 9-0 with a 1.97 ERA in his previous 10 September starts dating to 2009. But he failed in his bid for his 19th victory and 40th over the past two seasons, which would've marked the first time a Philadelphia pitcher accomplished that since Steve Carlton won 42 games combined in 1979-80.
Halladay tossed eight innings and allowed four runs on six hits with six strikeouts and a season-high four walks (two intentional).
"Hopefully we'll get things going and finish on the right foot," Halladay said. "We've won all year and there's no doubt we'll continue that. There's no cause for concern. Naturally there's a little lull after you clinch."
Berkman's solo home run and Nick Punto's RBI groundout in the first helped the Cardinals take a 2-0 lead. It was Berkman's 31st home run, but first since Aug. 26.
The Phillies got a run back in the second on Ruiz's single.
St. Louis regained a two-run lead in the third when Lohse, after hitting his second double of the season to lead off the inning, scored on Berkman's two-out single.
Philadelphia had a chance for a big inning in the bottom half, loading the bases with one out on a pair of singles and an error, but Lohse struck out Raul Ibanez and Placido Polanco to end the threat.
Albert Pujols' two-out double to left in the seventh drove in Punto and gave the Cardinals a 4-1 lead. The slugger, who had been 1 for 10 against Halladay, has reached safely in 35 consecutive games.
Philadelphia lost a four-game series for the first time this season after winning its previous eight. The Phillies have scored three runs or fewer in 10 of their past 11 games, averaging 2.5 runs while going 5-6.
Rafael Furcal went 3 for 4 with two doubles for St. Louis.
- Rollins' triple gave him 100 for his career.
- Berkman is 11 for 24 (.458) in his past seven games.
- The crowd of 45,048 was the 200th consecutive regular-season sellout and 213th overall, counting postseason games.
- Cardinals outfielder Matt Holliday missed his fifth consecutive game with an inflamed tendon on his right middle finger.