Friday night's Marlins-Giants rematch will be a new experience of sorts for Henderson Alvarez and a familiar exercise for Yusmeiro Petit.
Alvarez, who will start his ninth game of the season for the Marlins, will make his first AT&T Park appearance. Petit, a fellow right-hander, is set to fill in for the second time this season as an emergency starter for the Giants.
Alvarez planned on doing some homework to learn more about Giants hitters during Thursday's series opener.
"I will be keeping the charts for the hitters tonight, and I've seen them play on television," Alvarez said. "I always check them out, how they might attack certain pitches."
Alvarez was aware of the Giants' scoring potential, as San Francisco's revived offense entered Thursday ranked second in the National League in home runs and fourth in slugging percentage and runs.
"The key for me will be to keep the ball low," he said.
The same could be said for Petit, who must maintain his best location to subdue the Marlins, who have four players batting higher than .300 this month: Giancarlo Stanton, Jeff Baker, Reed Johnson and Jeff Mathis.
When Petit has his control, he tends to have a lot going for him. His near-perfect game last Sept. 6 against Arizona was a prime example. More recently, in his first appearance of the season as a replacement starter, he blanked San Diego on three hits for six innings in a 6-0 win. He went to only two three-ball counts in that game and threw first-pitch strikes to 15 of the 20 Padres he faced.
Petit was informed about an hour before that game that he would replace Matt Cain, who cut his index finger while making a sandwich. This time he will have had the benefit of a full day's notice as he steps in for Tim Hudson, who's sidelined by a strained left hip.
"I'm prepared for it at any time," Petit said of his 45th career start. "Even if it's one moment before the game."
Marlins: Hungry like the Wolf
If left-hander Randy Wolf can maintain a modicum of success, he could become one of the feel-good stories of the season.
Wolf, a 2003 All-Star as a starting pitcher with Philadelphia, has materialized as a reliever with the Marlins after missing the entire 2013 season while recovering from Tommy John surgery.
After tuning up by making six starts for Arizona's Triple-A affiliate, Wolf signed with the Marlins and recorded his first big league save on Wednesday at Los Angeles.
Giants: Colvin stays hot
Manager Bruce Bochy has been known to ride a hot hand as long as possible. This tendency could give Tyler Colvin an opportunity to put up some impressive numbers.
With his 2-for-4 performance in Thursday's 6-4 series-opening victory over Miami, Colvin improved his batting average to .462 in five games as a Giant. All but one of his hits have gone for extra bases (three doubles, a triple and a home run).
Bochy will be particularly interested in using the left-handed-batting Colvin against right-handed pitchers. Before the Giants summoned him, Colvin hit .398 off righties at Triple-A Fresno.
• Stanton extended his hitting streak to 17 games with his fifth-inning single on Thursday. He has hit .417 during his surge, which is the Major Leagues' longest active streak.
• The Giants and Marlins entered the series opener ranked first and second in the Major Leagues, respectively, in two-out RBIs. San Francisco increased its total to 80, followed by Miami's 75.
• Giants third baseman Pablo Sandoval went 1-for-4 to bring his hitting streak to a six games, a personal high for the season.