SAN FRANCISCO -- Geoff Blum is determined to do everything he can to keep the San Diego Padres from feeling the effects of Khalil Greene's absence.
Blum had a two-run homer and a go-ahead single batting in the leadoff spot, and San Diego ended a three-game losing streak with a 5-3 victory over the struggling San Francisco Giants on Monday night.
With Greene sidelined with a broken finger, Blum has been a reliable replacement.
"That's what a ballclub's all about," he said. "There are nine guys on the field, but we've all got to pick each other up once in a while."
Woody Williams (2-1) pitched seven strong innings as the Padres spoiled another chance for Felipe Alou to earn his 200th win as Giants manager.
The Padres rebounded from a three-game sweep at Arizona over the weekend with a much-needed win against Noah Lowry (1-2), defeated for the second straight start after the left-hander began his big league career 7-0.
Mark Loretta singled twice and drove in a run and Phil Nevin had an RBI double to give him a 10-game hitting streak for San Diego. The Padres have won all three games against their NL West rival so far this year, including a two-game sweep last week at Petco Park, after winning the season series last year for the first time since 1998.
Trevor Hoffman struck out the side in the ninth for his third save, sending the Giants to their ninth defeat in 13 games after being favored to win the division before the season. San Francisco will count on ace Jason Schmidt to get the team back on track Tuesday in the middle game of this series.
Blum connected on an 0-1 pitch from Lowry in the second, sending the ball over the left-field fence for his third homer of the year. Only one of the runs was earned on the shot after Sean Burroughs got aboard when second baseman Ray Durham misplayed his grounder for an error.
Blum's sixth-inning RBI single made it 4-3 and chased Lowry after 5 1/3 innings and 107 pitches.
"He's just done a terrific job everywhere," Padres manager Bruce Bochy said. "He's really taking advantage of his playing time."
Al Levine replaced Lowry and made his Giants debut hours after being called up from Triple-A Fresno when San Francisco sent struggling fifth starter Jerome Williams down to work on his command.
Levine, a non-roster invitee to spring training before being waived and re-signed to a minor league deal, immediately gave up an RBI single to Loretta.
Edgardo Alfonzo hit an RBI double in the first for the Giants, who scored two runs in the fifth to tie it. Omar Vizquel singled in a run, then J.T. Snow followed with a bloop single to shallow left-center that fell between left fielder Ryan Klesko, center fielder Xavier Nady and Blum.
Vizquel suggested afterward the Giants might need a team meeting, a notion Alou leaves up to his players because he believes a meeting can be a sign of "panic."
"It's probably a good idea to have a meeting, good to talk between ourselves," the nine-time Gold Glove shortstop Vizquel said. "I'm still waiting for leadership to come forward. ... We're making a lot of mistakes with pitching and we're not hitting in the clutch. When you have that combination of both, it's not a good sign for winning."
While Williams acknowledged he had a little bit of hard luck, he couldn't complain about a win over this Giants lineup - even without injured slugger Barry Bonds.
"They were hitting the ball where we weren't," said Williams, who struck out seven and walked two. "It was almost like Groundhog Day sometimes. ... I knew coming in I'd have to be sharp to beat that lineup."
San Diego loaded the bases against Lowry in the first, but the left-hander struck out Ramon Hernandez and Nady to get out of the jam.
Lowry was coming off his first major league loss last Wednesday against Arizona. After allowing singles to Klesko and Burroughs in the third, Lowry got seven straight outs, but couldn't sustain it in the sixth.
He allowed four earned runs and eight hits, struck out five and walked two. In four starts against the Padres last season, Lowry had three no-decisions and one win.
"I couldn't get it done," he said. "There's no reason to doubt myself. I've succeeded at this level before."
Bonds walked around the clubhouse without the aid of crutches, four days after having fluid drained from his surgically repaired right knee. Bonds socialized with his teammates and appeared upbeat while playing backgammon against closer Armando Benitez. ... Lowry threw 51 pitches in the first two innings. ... Pedro Feliz singled in the eighth to extend his hitting streak to eight games. ... Aside from his error, Durham also struck out looking twice before hitting a single in the fifth. ... In 1 2/3 innings, Tyler Walker walked four, struck out two and threw two wild pitches.