John Lannan's left knee injury flared up again, and this time it led to the shortest outing of his six-year career.
"I want to get this thing fixed _ that's what it comes down to," Lannan said. "It's disappointing because I thought I got it under control the first time. Obviously it's something that needs to be fixed."
Lannan, who plans to see a knee specialist on Thursday, only made it through 1 1-3 innings before departing Philadelphia's 6-3 loss to the Atlanta Braves on Wednesday night.
Chris Johnson drove in three runs, Jason Heyward homered and Brandon Beachy pitched six strong innings for the Braves.
Philadelphia, which has lost seven of eight series since All-Star break, has dropped 19 of 23 overall and 13 of 14 on the road.
The Braves have won two straight and 17 of 19 to lead the majors with a .612 winning percentage.
Lannan (3-6) gave up four hits and five runs with three walks and one strikeout.
Rain delayed the start of the game 1 hour, 48 minutes, but Lannan didn't think the long wait affected his knee.
The left-hander missed two months after straining his left quadriceps in an April 17 loss at Cincinnati. He learned at that time that his knee showed some structural damage.
"Every time I push off, there's a pain there in the knee," he said. "I'm trying to get through that and everything else is tightening up."
Coming off a 9-2 loss last Friday at Washington in which he allowed a career high-tying eight earned runs, he is 1-5 with a 10.50 ERA in his last six road starts.
Philadelphia, which stranded runners in scoring position three times in the first four innings, has been outscored 85-30 over its last 15 road games.
Beachy (2-0) held the Phillies scoreless until Dominic Brown's 27th homer cut the lead to 5-2 with one out in the sixth.
Beachy, making his fourth start since returning from elbow ligament replacement surgery, allowed five hits, two runs and no walks. The right-hander struck out four, beating Philadelphia for the first time in nine career starts.
Craig Kimbrel converted his 28th consecutive save opportunity and 38th in 41 chances, striking out John Mayberry Jr., retiring Carlos Ruiz on a flyout and pinch-hitter Kevin Frandsen on a groundout.
Kimbrel entered the game with none out in the ninth after David Carpenter allowed a leadoff homer to Darin Ruf and walked Cody Asche.
The Braves went up 2-0 in the first on Heyward's leadoff homer and Johnson's sacrifice fly.
Lannan, making his 148th career start, escaped further damage with runners on first and third when B.J. Upton took a called third strike, but his troubles continued in the second with a one-out walk to Beachy.
"His problem is his leg," Phillies manager Charlie Manuel said. "He got hurt and when he comes back he hurts his leg again. He's had a couple games where he was pretty good. He just hasn't been able to go out there consistently in the rotation."
Heyward doubled on a liner off third baseman Asche that advanced Beachy to third, and after Justin Upton walked on five pitches, Lannan's night was over.
Atlanta took a 5-0 lead after the next Philadelphia pitcher, Zack Miner, gave up Freddie Freeman's sacrifice fly and Johnson's two-run single.
Beachy, who left for a pinch hitter in the sixth, improved to 1-3 and lowered his ERA to 3.67 in nine career starts against Philadelphia.
Luis Ayala and Luis Avilan combined to allow one hit with one strikeout in the seventh and eighth for Atlanta before Ruf's seventh homer made it 6-3.
It doesn't get any easier for the Phillies, who open a three-game home series against the streaking Los Angeles Dodgers on Friday.