• Turning point: Bonds hit the game's only RBI, his 739th career homer, to center field in the second inning.
• Figure this: It was the first time Zito had consecutive scoreless starts since winning the AL Cy Young Award with Oakland in 2002.
• Quotable: "This is the Barry Zito that we've seen in the American League." -- Bengie Molina
• Elias Says: It's the second time in his career that Bonds has hit a home run in a 1-0 win. He also did it for the Giants on June 17, 1996 against Al Leiter of the Marlins.
-- ESPN.com news services
Giants 1, Diamondbacks 0
SAN FRANCISCO (AP) -- The Barry Zito that San Francisco Giants fans saw in his first two starts of the season looked nothing like a former Cy Young Award winner who just signed the richest contract ever for a pitcher.
Now that he's no longer trying to live up to the expectations that came with his $126 million contract, Zito has once again found his groove.
"I think I was getting caught up in everything," said Zito, who was 0-2 with an 8.18 ERA after his first two starts of the season.
"It started to seem like more than baseball. There was a whole lot of stuff going on. These last couple of games it's been go out and have fun like when you're a kid. Put everything outside your head and let your stuff work for you."
Zito (2-2) followed up his six scoreless innings in Colorado on Monday with 7 1-3 more against the Diamondbacks, the first time he has had consecutive scoreless starts since winning the Cy Young with Oakland in 2002.
Bonds provided the offense with a home run to lead off the second inning against Edgar Gonzalez (1-2) that left him 17 homers away from breaking Hank Aaron's career record of 755.
The big day for San Francisco's star Barrys gave the Giants their fourth straight win. San Francisco has won seven of nine following a 1-6 start under new manager Bruce Bochy.
"Both Barrys came through for us today," Bochy said. "I think guys feel better with the way things are going. We got off to a rough start but we know it's a long season."
Zito had struggled in his first two outings at home, losing the season opener to San Diego and getting shelled for eight runs by the Los Angeles Dodgers in his second start.
Even though he's normally a slow starter, this was a cause for concern for Giants fans. But he followed that up with the strong start at Coors Field and then his first win in front of his new fans.
"This is the Barry Zito that we've seen in the American League," catcher Bengie Molina said. "He hit his spots very well today. He hit inside to open up the changeup and curveball. He did great today."
Zito ran into little trouble, allowing four hits and three walks. The Diamondbacks threatened in the sixth inning when they put two on with one out before Zito retired Orlando Hudson on a deep fly to left field and struck out Carlos Quentin.
Zito got a standing ovation when he was replaced by Brad Hennessey after walking Eric Byrnes to put runners on first and second with one out in the eighth to end his 126-pitch outing. He finished with five strikeouts.
"We had our opportunities," manager Bob Melvin said. "But right now we're struggling to get a hit with runners in scoring position."
Bonds went 2-for-3 on the day before leaving for a pinch runner after hitting a leadoff single in the seventh. Gonzalez pitched out of a second-and-third, no-out jam that inning by retiring Ryan Klesko on a groundout with the infield in and striking out Molina and Randy Winn.
Gonzalez allowed one run, five hits and no walks in seven innings, striking out seven. He also nearly retired Bonds before the home run, but a foul ball off of third base landed in the stands just out of Chad Tracy's reach. Bonds then hit the next ball well over the center-field fence. There was no doubt it would clear the fence and the scoreboard flashed "739" before the ball even landed.
"I made one mistake," Gonzalez said. "It was supposed to be inside, and it stayed right in the middle. When he swung, I knew it was trouble. It's Barry Bonds."
Bonds is 10-for-20 with three homers and seven RBIs in six games since moving back to the cleanup spot after starting the season batting third.
San Francisco INF Rich Aurilia singled in the fourth inning to extend his hitting streak to 14 games, matching his career high set last season in Cincinnati. ... Quentin went 0-for-4 with two strikeouts and is hitless in 14 at-bats on the road trip. ... The last time Zito had consecutive scoreless starts was Sept. 8 and Sept. 13, 2002, when he blanked Minnesota and Seattle. ... Arizona has lost five of six.