Yusmeiro Petit surely won't sneak up on the D-backs this time.
Five days after Petit struck out a career-high 10 batters in six innings in Arizona, the Giants right-hander faces the Snakes again Friday night at AT&T Park.
Petit, 28, is making his fourth appearance of the season and third start in place of the injured Matt Cain. He's 2-0 with a 3.00 ERA this season and is using September as an audition to join a Giants rotation that could look much different next season. Right-handers Tim Lincecum and Chad Gaudin are impending free agents, while San Francisco is unlikely to pick up Barry Zito's $18 million option for 2014.
"I can worry about only one thing: trying to do my job right now," Petit said through roving infield instructor and interpreter Jose Alguacil after his last start. "Whatever they want to do next year is their decision. I don't have control over that."
Petit will have to deal with one of the game's best hitters in D-backs first baseman Paul Goldschmidt, who was 0-for-3 with two strikeouts against the Giants righty last weekend. Goldschmidt singled in Thursday's third inning to snap an 0-for-16 streak and needs to continue to make adjustments, D-backs manager Kirk Gibson said.
"Teams are pitching around him and he still has to be ready. I've seen 2-0, 3-0 offspeed pitches. That doesn't happen," Gibson said. "When he does get a pitch, he can't miss. [The Giants] pitched around him last series. He's been productive for us. He still prepares, gets out there and plays defense, runs the bases. This is where he has to make adjustments."
D-backs: Corbin looks to rebound
It's been a rough two starts for left-hander Patrick Corbin, who starts Friday against a Giants lineup that tagged him for five runs in five innings on Sunday. Corbin has allowed 13 earned runs in his last 10 1/3 innings. The D-backs will monitor him closely in this start for any signs of fatigue as they consider reducing his workload down the stretch.
• Shortstop Willie Bloomquist is batting .542 with four multi-hit efforts in eight games since returning from the disabled list.
Giants: Posey has fractured finger
Buster Posey was out of the lineup for the second straight game Thursday with an injured ring finger and torn fingernail on his right hand. Results of pregame X-rays were released after the game and revealed the catcher has a small fracture in the finger.
Manager Bruce Bochy said the catcher would play if he can tolerate the pain and could return in a few days. Posey was hurt Tuesday in San Diego trying to block a ball in the dirt.
• Giants relievers have a 1.21 ERA and 28 strikeouts in their last 13 games.
• The Giants lead the season series, 10-6.
• D-backs reliever Joe Thatcher has held the Giants scoreless in 13 of 15 games at AT&T Park and 20 of 23 games overall.
• San Francisco's Angel Pagan (10 games, .318) and Pablo Sandoval (seven, .429) have active hitting streaks.
• Arizona's Adam Eaton is hitting .342 with nine RBIs and 15 runs scored in his last 18 games.