Giants aim to get right against Cubs

Madison Bumgarner tries to reverse the San Francisco Giants recent fortunes on Saturday when they continue their three-game series with the Chicago Cubs at AT&T Park.

Bumgarner lost his first start out of the break on Sunday against Arizona, but pitched well, as he allowed just a run and five hits in seven innings. Still, he fell to 10-6 on the year, while lowering his ERA to 2.93.

He had won each of his previous three decisions over four starts at home while pitching to a 1.93 ERA.

Bumgarner beat the Cubs earlier in the year and is 4-2 with a 2.78 ERA in seven starts against them.

San Francisco could use another big start from Bumgarner on Saturday, as it tries to bounce back from yet another heartbreaking loss in Friday's opener. The Giants held a one-run lead in the ninth, but Chicago scored two runs on first baseman Brandon Belt's fielding error and eked out a 3-2 victory.

Romo (3-5) served up a leadoff single to pinch-hitter Julio Borbon before walking pinch-hitter Dioner Navarro. The right-hander bounced back with a strikeout of David DeJesus and then got Junior Lake to ground into a fielder's choice to leave runners on the corners with two outs.

Anthony Rizzo then fouled off a pair of 3-2 pitches before ripping a grounder toward first that snuck past Belt and trickled down the right-field line, allowing Borbon and Lake to score for a one-run lead.

Kevin Gregg worked around a leadoff single in the bottom half to secure his 20th save of the season and make a winner out of Matt Guerrier (4-4), who tossed 1 1/3 perfect innings of relief work.

Starlin Castro was credited with the lone RBI for the Cubs, who won for the third time in five games, despite going 1-for-11 with runners in scoring position.

San Francisco starter Matt Cain yielded just one run on six hits while striking out seven over seven frames, but the Giants were unable to hold on late as they fell for the fifth time in their last six games.

"It's always hard at home when you lose a game like this, especially the way we came back," San Francisco manager Bruce Bochy said. "In this game you have to put it behind you and come out here and hopefully wash it off, especially a player like Belt."

Hoping to add to the Giants' woes on Saturday will be lefty Chris Rusin, who beat the Diamondbacks on Monday. Rusin held them to two runs and two hits in five innings to improve to 1-0 to go along with a 5.40 ERA.

Rusin, of course, took the rotation spot of the recently traded Matt Garza. The Cubs also made another deal on Friday, shipping outfielder Alfonso Soriano to the New York Yankees for a minor league pitcher.

This will be Rusin's first-ever appearance against the Giants.

Despite Friday's loss, San Francisco is 9-3 in this series since the start of the 2012 season.