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9/1/2013 1:27 A.M. ET

Prospect Arroyo opens eyes in Rookie ball

PHOENIX -- Shortstop Christian Arroyo, the Giants' No. 1 pick (25th overall) in June's First-Year Player Draft, made an immediate impression by being named Most Valuable Player of the Rookie-level Arizona League on Saturday.

Plucked from Hernando High School in Brooksville, Fla., Arroyo hit .326 in 45 games for the Giants' affiliate. His production included 25 extra-base hits -- 18 doubles, five triples and two home runs -- as well as 39 RBIs.

"Put it this way: I haven't seen anything that I don't like from this kid yet," said Jose Alguacil, the Giants' roving infield instructor, who estimated that he saw Arroyo play about 14 games.

Though Arroyo's offensive skills were touted the most when the Giants drafted him, Alguacil noticed positive results when he worked with the 18-year-old on his defense.

"He makes adjustments quickly, which is good," Alguacil said. "I like the kid a lot. There's still some stuff to adjust to. But as a young guy, he's very, very, very good. I was happy and pleased with the way he goes about his business."

Alguacil noted that Arroyo quite literally possesses growth potential.

"There's a lot of room to fill on that body," Alguacil said of the 6-foot-1, 180-pounder, who's ranked eighth on MLB.com's list of the organization's top 20 Minor League prospects.

Infielder Ryder Jones, San Francisco's second-round Draft selection, and left-hander Luis Ysla joined Arroyo on the league's season-ending All-Star team.

Abreu to be lone initial September addition

PHOENIX -- The Giants announced that Sunday's roster expansion initially will involve only one player: infielder Tony Abreu, who will be reinstated from the 15-day disabled list.

The anticipated handful of players to be promoted for September from Triple-A Fresno won't officially be named until Monday or Tuesday. Fresno's season concludes Monday.

Abreu, who has weathered left knee problems all season, owns a .266 batting average in 34 games with San Francisco.

Giants express sympathy for former teammate Ross

PHOENIX -- Visiting Chase Field and his Arizona Diamondbacks teammates Saturday for the first time since sustaining horrific right hip injuries Aug. 11, Cody Ross encountered one of his old Giants acquaintances: manager Bruce Bochy.

"Everybody who played with Cody likes him," Bochy said.

Said Ross, "He said he was going to call me and felt bad for me and was thinking about me."

Ross' best friends with the Giants during his 2010-11 tenure with the club, such as first baseman Aubrey Huff and left fielder Pat Burrell, no longer play organized baseball. But, echoing what Bochy said, one Giant conveyed the clubhouse-wide concern for Ross, who could be ready to resume baseball-related activites by the middle of Spring Training.

"Everybody in here, once they saw the injury [on televison replays], felt bad for him," said left-hander Javier Lopez, who was traded to the Giants one month before Ross arrived in a separate deal. Ross proceeded to win Most Valuable Player honors in the 2010 National League Championship Series, ensuring his place in franchise lore.

Speaking publicly for the first time since being injured -- which occurred when he slowed down as he ran out a grounder to third base -- Ross said he instantly sensed he had fractured and dislocated his hip, which proved to be the case. It wasn't too long before Ross' thoughts shifted to Bo Jackson, the multiple-sport star whose athletic career ended with a hip injury in January 1991 while playing running back for the Oakland Raiders.

"His injury happened 20 years ago. Technology's better," Ross said, explaining his optimism. "I don't play football. I don't have to worry about carrying 260 pounds of shredded muscle. I'm 190 pounds and playing baseball."

Ross, 32, entered the interview room on crutches, wearing a white cap backward and his typical wide grin.

"My spirits have been up," he said. "I know I'm going to come back from it and be ready to help next year."

Worth noting

• Right-hander Matt Cain (bruised throwing arm) and left-hander Jeremy Affeldt (groin) both threw off bullpen mounds as they continued recovering from their respective injuries. Bochy said Cain remains on track to start next Saturday against Arizona at AT&T Park. Bochy wasn't sure whether Cain will simply reclaim his spot in the rotation, or if a starter will be skipped, or whether the Giants will switch to a six-man starting contingent. "That's least likely," Bochy said about expanding the rotation.

• According to the Elias Sports Bureau, the Giants' 1-0 victory Friday marked the first time in more than 20 years that they won such a game by scoring in the top of the first inning. The previous occasion occurred at Atlanta on Sept. 30, 1992. Will Clark's sacrifice fly scored Darren Lewis before starter Jeff Brantley and relievers Bill Swift and Rod Beck combined on a five-hitter.

• Bochy acknowledged the irony of replacing third baseman Pablo Sandoval with Joaquin Arias for defensive purposes in Friday's ninth inning. Three innings earlier, Sandoval made a spectacular diving backhanded stop of A.J. Pollock's grounder with the bases loaded and two outs in the sixth inning, saving the game. Bochy explained that Sandoval still has been bothered by a sore back, prompting the late-game switches. "It allows him to get a little break and it keeps Arias involved," Bochy said. "If Pablo were 100 percent, I probably wouldn't have done it."

Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.