SAN FRANCISCO -- The Giants announced after Sunday's game that infielder/outfielder Mark DeRosa will begin a rehab assignment with Class A Advanced San Jose on Monday.

DeRosa, 35, has been sidelined since May 9 with a left wrist injury and said earlier this week his ultimate goal is to join the Giants in Pittsburgh, where they begin a two-city trip next Friday.

In 26 games this season, DeRosa is hitting .194 with one home run and 10 RBIs.

Hot-hitting Uribe gets partial day of rest

SAN FRANCISCO -- Juan Uribe's 3-for-3 day at the plate Saturday didn't change the plans of Giants manager Bruce Bochy, who gave the 31-year-old shortstop a day off Sunday.

Entering Sunday, Uribe -- the club's top run producer -- had played in 46 of San Francisco's 48 games.

"That was the plan a few days ago, to give him today off," Bochy said Sunday. "He's had a tight hamstring in the past and we don't want it to flare up on him, so we need to keep this guy healthy and give him the occasional day off. It's not easy after getting three hits, but he knew going into that game that he would be off today."

Uribe went 3-for-3 with a solo home run, two RBIs and a walk Saturday and is hitting .286 with seven home runs and 29 RBIs on the season.

Ryan Rohlinger got the start at short and batted eighth in place of Uribe, who replaced Rohlinger in the eighth inning after he injured his hamstring running the bases in the previous frame. Uribe singled and later scored the game-winning run in the bottom of the 10th.

Rowand sits in series finale vs. D-backs

SAN FRANCISCO -- As Giants manager Bruce Bochy hinted the day before, Giants center fielder Aaron Rowand received Sunday off in the team's series finale against Arizona.

Since being activated from the disabled list May 2, Rowand has started each of the Giants' past 25 games.

In that span, the center fielder has struggled -- hitting .202 (21-for-104) -- but Bochy said he was sitting Rowand just to give him a blow.

"He's been out there pretty much every day," Bochy said. "I've got to start resting some of these guys, especially as we start getting into this where we have some long stretches with games. These guys need a break every once in a while."

Andres Torres started in center for the Giants, with Nate Schierholtz getting the call in right.

Bochy: No pressure on Posey

SAN FRANCISCO -- Sunday was Day 2 of the Buster Posey era.

And although many fans' expectations for the Giants' top prospect only heightened after Posey went 3-for-4 with three RBIs in his 2010 debut Saturday, Giants manager Bruce Bochy said his expectation for the budding star is simple: Be himself.

"Just try to keep the line moving like he did last night," Bochy said of what he wants Posey to do. "He used the whole field, had good at-bats like he did at Fresno. That's what we want him to do here. We don't want him to try to do any more than he was doing down there."

Posey was once again in the lineup Sunday, batting sixth and playing first base. Posey batted sixth Saturday, but Bochy said the 23-year-old might bat seventh when both Juan Uribe and Bengie Molina are in the lineup.

Affeldt says he's ready for action

SAN FRANCISCO -- Giants reliever Jeremy Affeldt had a message for his skipper Saturday night.

"'If it's a situation for me and you don't get me up, I'm going down there anyway,'" Giants manager Bruce Bochy recalled his left-handed setup man telling him Saturday.

If it sounds like Affeldt's ready to go, he is. After not pitching in the Giants' past five games due to an ailing left hamstring, Affeldt is available -- but will only be called upon if needed.

"If it's the right situation," Bochy said when asked if Affeldt will pitch. "The more time he gets off, the better he'll be. He's good to go but I don't mind if I don't have to use him. A game like [Saturday's 12-1 win], I'll take that."