SAN FRANCISCO -- Manager Bruce Bochy left open the possibility that second baseman Freddy Sanchez could rejoin the Giants on Monday, when the team begins a two-city, four-game trip at San Diego.

It has been speculated that Sanchez, who's recovering from an injured left shoulder, would be activated from the 15-day disabled list Wednesday, when the Giants open the second leg of their brief journey at Arizona.

Sanchez's hot hitting thus far on his injury rehabilitation assignment prompted the notion that he could return sooner than later. In three games with high-Class A San Jose, Sanchez went 6-for-9 (.667) with six runs, five doubles, four RBIs and three walks.

"I wouldn't rule it out," Bochy said regarding a Monday activation for Sanchez. "But I have to talk to him."

Sanchez spent Friday traveling to join Triple-A Fresno, which starts a four-game series at Oklahoma City on Saturday.

In other injury-related matters, Bochy said that infielder-outfielder Mark DeRosa could test his left wrist by trying to swing a bat as early as Saturday. Bochy added that shortstop Edgar Renteria, who has resumed performing baseball-related activities, should be able to leave the 15-day disabled list on May 22, the date he becomes eligible for reinstatement.

Bochy tightlipped about potential moves

SAN FRANCISCO -- Predictably, manager Bruce Bochy stayed mostly mum about the chat he held with general manager Brian Sabean and hitting coach Hensley Meulens after the San Diego Padres completed their three-game sweep of the Giants on Thursday.

Given the absence of major changes in San Francisco's lineup Friday, the team's brain trust apparently decided not to alter the roster dramatically -- yet.

"I don't want to talk about what we discussed, but we talked about a lot of things, which we do a lot," Bochy said.

Asked by one reporter if the possibility of promoting a player from Triple-A Fresno -- Buster Posey, by implication -- was among the topics, Bochy remained mysterious.

"We talked about different scenarios and options, and I'll leave it at that," he said.

It's safe to assume that the conversation was laced with at least some urgency. The second-place Giants fell a season-high 3 1/2 games behind San Diego, scored four runs in the series and dropped to 0-6 against the Padres this year.

"That's a tough series," Bochy said. "It starts with me and we need to get better."

Giants put in extra work on pickoffs

SAN FRANCISCO -- Hoping to improve at slowing down their rivals on the basepaths, Giants pitchers and infielders engaged in a refresher course in pickoffs and holding runners on base Friday afternoon before batting practice.

This wasn't just busy work. The Giants entered Friday having allowed 39 stolen bases, most in the National League. Arizona was a distant second with 32.

"We need to get a little better at it. There's no getting around it," Giants manager Bruce Bochy said.

Bochy explained that the Giants' constant changes in personnel at second base and shortstop necessitated extra drills involving pitchers and middle infielders so they could gain more familiarity with each other.