The Giants scored twice, on a sacrifice fly and double-play grounder, and that was enough because Randy Johnson and two relievers combined on a one-hitter in a 2-0 victory over the Arizona Diamondbacks.

Winning two of three in the series had little to do with the offense - which eked out four runs - and a lot to do with three starting pitchers tossing 212/3 scoreless innings. Johnson seven innings followed Jonathan Sanchez 62/3 and Tim Lincecum eight, helping to take heat off an offense that ranks 29th of 30 big-league teams in runs.

"We can't keep doing this. We're fortunate we won a series against a division rival, but we can't keep scoring two runs a game," Rich Aurilia said. "Now we're seeing what our pitching can do on a daily basis. We need to bear down a little more on offense, get guys in from third base. Even when we do get opportunities, we're not coming through."

The past nine games, the Giants topped three runs only once in a 5-4 loss to the Dodgers, so Johnson had to be near perfect. And he was. Three up, three down the first four innings. No hits through six. A double to Augie Ojeda to open the seventh. Overall, one batter over the minimum.

Bochy pulled Johnson after seven innings and 73 pitches, citing the heat and a projected low pitch count. Johnson, 45, seemed fine with it afterward, especially with Bobby Howry and Brian Wilson tossing a perfect inning apiece. Wilson earned his second save.

"I really wanted to rebound from that game in L.A. seven runs, eight hits, 32/3 innings," Johnson said after his 296th career victory. "A game like this could jump-start me, like Timmy's game could jump-start him. Nobody wants to be the weak link in the rotation."

The weak links in the lineup are another story.

Plate discipline is a major problem. Giants hitters have the fewest walks 28 in the majors and third-most strikeouts 103 in the National League. Sandoval, Travis Ishikawa and Bengie Molina have combined to strike out 31 times and walk once.

Before the series, batting coach Carney Lansford met with the offense and addressed discipline.

"I don't want to come off as negative, but we're chasing a lot of bad pitches," Lansford said before the series finale. "We have a lot of really aggressive - sometimes overly aggressive - hitters, and they need to be more selective. Especially young guys. When they're struggling, they tend to press instead of relax. I keep trying to stress to them patience."

It might have clicked for Sandoval, who had three hits including a triple to raise his average from .195 to .244. Ishikawa had Sunday's only RBI on a fourth-inning sac fly, and the other run scored when Aurilia bounced into a bases-loaded double play in the eighth. Sacrificing two outs for one run usually is not recommended, but this team at this time will take it.

"Best double play I've hit into," a smiling Aurilia said.

Bochy said he'll keep the lineup a few games even though Lewis, who entered with the majors' top on-base percentage .545, struck out three times. Bochy liked Lewis at No. 1 last season and for now prefers an experienced presence in the 3-4-5 holes with Winn, Molina and Rowand.