Both the Giants and Marlins needed five pitchers to get through a wild 14-10 San Francisco victory Friday, so they could especially use a deep outing from their starters Saturday for the second game of their three-game set in Miami.
Giants starter Matt Cain has enjoyed a recent resurgence and is pitching closer to the form he was in 2012, when he was the ace of a team that won the World Series.
He began the season 5-6 with a 5.06 ERA, but since then he has registered four quality starts over his past five with a 2.38 ERA. If he continues to pitch well, Cain should get a chance to continue his streak of throwing 200 or more innings, a feat he's accomplished in six straight seasons. He has thrown 146 innings this season.
"That's what it's about, watching where they're at as far as their delivery, their velocity, showing any signs of fatigue," said Giants manager Bruce Bochy. "We're certainly not going to stress these guys out the last month unless you're right in the middle of [a postseason race]. We'll keep a watchful eye on all these guys, including Matt. As long as he's throwing the ball the way he is now, we're going to let him go."
The Marlins will send starter Henderson Alvarez to the mound. In eight starts since his July 4 debut, he has issued 11 walks, tied with Hisashi Iwakuma for the second fewest in the Majors during that span.
Marlins manager Mike Redmond raved about the way his young pitcher has thrown this season.
"I just kind of marvel at him every time he goes out there," Redmond said. "I think he's really thriving in this environment. I really do. With these young guys, he's having fun. You're kind of seeing his personality coming out.
"I think having [starter Jose] Fernandez around him, those guys really have created a great rapport with each other. It's fun to watch them and fun to talk to them. They give each other a hard time [joking around], but they push each other, too."
Giants: Posey gets some rest
Saturday might be the only chance fans at Marlins Park get to see Giants catcher Buster Posey.
He did not play Friday after catching 164 pitches Thursday, and Bochy speculated that he may also rest Posey with a day game Sunday.
"It's been a little different year in respect we have played longer games," Bochy said. "You look at the first six weeks, we had our pitching struggling a little bit. There's some long games. It's a different game.
"You catch 145, 130 pitches or you catch 200 pitches. That takes a toll on you, and that's been the difference, too. It's not just a game. It's what type of game it is. We've played longer games this year."
Marlins: Caminero makes debut
Marlins rookie Arquimedes Caminero threw a scoreless inning and struck out a batter when he made his Major League debut Friday, just hours after being called up to the Majors for the first time.
The 26-year-old right-hander from the Domincian Republic finally reached his dream two years after being sidelined due to Tommy John surgery. He is the team's No. 20 prospect according to MLB.com, with a fastball that can reach 100 mph and stuff good enough that he could emerge as a closer in the future.
"It's a pretty exciting thing," Caminero said prior to the game. "I wasn't really thinking about getting called up. I was trying to do something good in [Double-A] Jacksonville."
• San Francisco's Brandon Belt extended his hitting streak to a season-best 11 games with a single in the first inning Friday.
• The Giants' Hector Sanchez has homered in back-to-back games after a homerless drought of 56 games dating back to September.
• Alvarez will be making his first career appearance against a National League West team.
• Marlins third baseman Placido Polanco was plunked on the back of the head by a 94 mph Santiago Castilla fastball Friday night. Polanco didn't show any concussion-like symptoms, and he should be fine. However, he is being monitored day to day.
• Justin Ruggiano had his second two-homer game of the season Friday, and both have been against the Giants. He also went deep twice at San Francisco on June 23. For the season, Ruggiano is 6-for-17 vs. the Giants with four homers and seven RBIs.
Jamal Collier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.