SAN FRANCISCO (Ticker) -- Wes Obermueller tossed 6 2/3 impressive innings and Geoff Jenkins homered as the Milwaukee Brewers snapped a three-game losing streak with a 3-0 victory over the San Francisco Giants .

In a game lacking much of the drama of the previous two nights, with Barry Bonds on the bench, two young righthanders enjoyed strong starts.

Obermueller (1-1) earned his third career win, allowing just three hits with three strikeouts. He retired the first 11 batters and didn't face a three-ball count until issuing his lone walk with two outs in the seventh.

"When you can work ahead, it breeds confidence," Obermueller said. "That is an aggressive-swinging team and we got our outs."

Obermueller helped his own cause in the seventh with an RBI single.

"I got into my first one, too, to deep center (in the fifth)," he said. "I was glad to help myself in that situation."

Brewers manager Ned Yost was impressed by his young pitcher.

"Great game by Wes," Yost said. "He was way out on the attack, throwing strikes from the first pitch on. He's up for the task and he stays on attack. I like that."

Jeff Bennett and Dan Kolb completed the four-hitter.

Jenkins belted his first homer of the season in the second off Brian Cooper (0-1) to open the scoring. Four batters later, Gary Bennett singled home a run for a 2-0 lead.

Just one day after moving into third all-time with his 661st homer, Bonds began the game on the bench for the Giants. But with runners on first second with two outs in the seventh and the Giants trailing 3-0, he entered to the roaring approval of 37,844 at SBC Park.

The cheers turned quickly to boos as Bennett intentionally walked Bonds to load the bases. Pinch hitter Edgardo Alfonzo then chased a first-pitch slider from Bennett and popped to shallow center field to end the threat.

The choice to walk Bonds was obvious to Yost and Bennett.

"The situation dictates it," Yost said. "We just weren't going to pitch to him in that situation. We don't look at anybody else like Barry Bonds ."

"You still have to go after the next hitter," Jeff Bennett added. "The bases were loaded. Ned made the right decision."

When asked about the lingering effects of last year's slump, Alfonzo insisted he feels fine, despite his .167 batting average.

"I don't think about what is in the past already," said Alfonzo, who normally hits fifth in the lineup, right behind Bonds. "I feel pretty good. I tried to do my best. It's a situation when whatever happens, happens."

Kolb fired a scoreless ninth for his third save, retiring the side in order. Bonds was left on deck when Michael Tucker flied out to end the game.

Making his Giants debut and first major league start since April 12, 2002 with Toronto, Cooper allowed two runs - both in the second - as Jenkins smacked a leadoff homer and Gary Bennett added an RBI single.

Cooper retired the next 14 batters he faced before being pulled for a pinch hitter in the sixth.

After learning Monday afternoon he was recalled and not hearing he would start until Tuesday evening as he drove from Yuma, Arizona to Phoenix to catch a flight to San Francisco, Cooper was happy with his start.

"I didn't have the best command today, but balls were hit at guys and the defense was great," he said. "I was pretty locked in."

Cooper struck out in his only at-bat and was relieved he didn't have to bat again.

"It would have been another embarrassing strikeout," he said.