PHILADELPHIA -- The San Francisco Giants let multiple opportunities with men on base slip away on Sunday afternoon.

Philadelphia Phillies outfielder Jeff Francoeur took full advantage of the one he got.

Francoeur's two-out, two-run double in the seventh inning helped the Phillies salvage the finale of a three-game series with a 6-4 win over the Giants on Sunday.

"I think any time you get a couple big hits like that, it's good for your confidence," said Francoeur, who hit a grand slam the day prior off Giants starter Madison Bumgarner. "Of course today's was to put us ahead, which was nice, so I'm just lucky for that."

It was the first at-bat of the game for the journeyman outfielder, who entered the game as a pinch-hitter for Odubel Herrera. That was a response move by Phillies manager Ryne Sandberg after Giants skipper Bruce Bochy pulled starting pitcher Ryan Vogelsong in favor of left-handed reliever Javier Lopez to face the lefty Herrera, who had homered earlier in the afternoon.

Francoeur certainly made Bochy pay for that decision, lining a 1-1 pitch down the left-field line to score Freddy Galvis from third and Ben Revere all the way from first, breaking a 3-3 tie that had lasted since the third inning.

"Javy was trying to be careful there and just yanked a changeup right in Francoeur's wheelhouse," Bochy said.

"When I came here, the one thing I wanted to do was make sure I hit lefties, that was my number one goal," Francoeur said. "The last two days, I've been able to do that."

Rookie sensation Maikel Franco added a solo home run -- his sixth since being called up May 15, and fourth in the last six games -- for Philadelphia in the bottom of the eighth.

"He's probably up for a playerof the week-type deal with the homestand that he had and the week that he had," Sandberg said. "That's a lot of home runs in a short period of time."

Phillies reliever Ken Giles (2-1) earned the win by throwing 1 2/3 innings of scoreless relief, and closer Jonathan Papelbon picked up his 12th save of the season despite allowing a run for the first time in seven appearances.

The ninth inning was just one of four in the game for San Francisco where the Giants put multiple men on base without scoring a run.

"It seemed like we had two men on every inning and couldn't add on there, and it came back to get us," Bochy said. "We had some chances...and couldn't quite cash in."

A day after the Phillies needed more than six innings out of its bullpen, starting pitcher Sean O'Sullivan was able to stay in and battle through six of his own, getting out of a few jams along the way.

"Knowing that our bullpen was thin, ... I tried to keep my pitch count down as low as I could and get as far as I could," said O'Sullivan, who threw 91 pitches. "When you look up at the scoreboard, you feel like you should at least finish six innings here, regardless of who you're facing, what the score is, your goal is to get through six, at least."

The win helped the Phillies (22-36) avoid being swept for the third time in their last four series, though the Giants had already secured their fifth consecutive series win at Citizens Bank Park by taking the first two matchups of the weekend.

Just like the day, which started off warm and sunny and cooled a bit throughout the game as clouds moved in, both teams' bats started off hot and then trailed off.

The Giants (32-26) got on the board with one run in the top of the second, but the Phillies quickly got back on top in their half of the inning thanks to a two-run single by left fielder Cody Asche.

That lead was also short-lived, however, as San Francisco took advantage of a mental fielding blunder by Phillies shortstop Galvis to take a 3-2 lead in the top of the third inning.

The Phillies managed to tie it back up in the bottom of the third