Big league clubhouses will begin to be a little more crowded Sunday, the first day rosters expand from 25 to 40 players.
Sunday's Giants-D-backs series finale could see some young talent making its way to the Majors, including some likely pitching depth for the D-backs, while most of the reinforcements will arrive when Minor League regular seasons end next week.
"We've talked before about bringing guys up and getting them the exposure to what goes on up here," said Arizona manager Kirk Gibson, "and get them to have an understanding so, when they come up here to play on a more consistent basis, they're more comfortable with it."
But don't expect all to be immediate contributors, as the transition to the big league game can take time.
"It's different," Gibson said. "It's a lot faster; there's a lot more that goes on."
Sunday's contest will hinge on two players who are already on the roster: starting pitchers Patrick Corbin and Yusmeiro Petit. Petit picked up his first win since Aug. 27, 2009, on Tuesday, his last victory coming in a San Francisco-Arizona series, but with the D-backs.
Petit played for Arizona from 2007-09, posting a 9-19 record with a 5.05 ERA in 56 games (35 starts). He is 4-7 with a 5.99 ERA through 25 career appearances (15 starts) at Chase Field.
His opponent, Corbin, will be pitching on an extra two days' rest thanks to an off-day and a shift in the rotation caused by an 18-inning game. Corbin has struggled of late, going 1-2 with a 5.13 ERA in his five August starts.
Giants: Cain, Affeldt progressing
Two San Francisco hurlers are progressing in their respective rehabs, as righty Matt Cain and lefty Jeremy Affeldt both threw off the bullpen mounds Saturday.
Affeldt is scheduled to throw a simulated game Monday as he works his way back from a left groin strain, and manager Bruce Bochy said Cain, recovering from a right arm contusion, remains on track to start next Saturday against Arizona at home. Bochy said he didn't know if Cain will reclaim his starting spot, or if another starter will skip a turn, or if San Francisco will switch to a six-man rotation. He said expanding the rotation is the least likely option.
D-backs: Ross makes first visit to Chase Field since hip injury
Former Giant and current D-back Cody Ross visited his teammates at Chase Field for the first time since breaking and dislocating his right hip Aug. 11.
The outfielder had surgery to insert two metal plates and several screws into his hip and was instructed by doctors to avoid any weight-bearing activities for three months. Ross was initially concerned the injury might be career-threatening, but he said he now expects to be ready for next season.
"The doctors reassured me that I should be able to come back and play at just as high a level," Ross said. "They said hopefully be back by Spring Training, middle part of Spring Training. That's the goal."
• The Giants' first-round pick in June's First-Year Player Draft, shortstop Christian Arroyo, is turning heads in Rookie ball. The No. 24 overall selection was named the Arizona League's Most Valuable Player on Saturday. He batted .326 in 45 games for the Giants' affiliate, knocking 18 doubles, five triples and two homers while batting in 39 runs.
• D-backs left-hander Matt Reynolds is still hopeful to make a return before the end of the 2013 season. Reynolds, who has been on the disabled list with a partial tear of his ulnar collateral ligament since June 10, is scheduled to toss a bullpen session Monday.
"Knock on wood, it's been pretty smooth sailing," he said.
• Triple-A Reno shortstop Chris Owings is likely to be among the D-backs' September callups. Owings is ranked as Arizona's No. 3 prospect by MLB.com and was named the Pacific Coast League's Rookie of the Year and Most Valuble Player this year.
Chad Thornburg is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.