SAN FRANCISCO -- Avoiding the possible distraction of Buster Posey's beaning and relying on a bases-loaded comebacker that generated three runs, the San Francisco Giants received an eight-inning three-hitter from starter Matt Moore in a 4-1 decision Monday over the Arizona Diamondbacks.
Arizona won thrice in a four-game, season-opening series against the Giants last week. But the D-backs got sloppy in the fourth inning as a pair of throwing errors facilitated San Francisco's odd scoring outburst that broke a scoreless tie.
"We had trouble scoring runs, so we'll take that break," Giants manager Bruce Bochy said.

D-backs starter Taijuan Walker (1-1) allowed three runs (two earned) over five-plus innings.
"He threw the ball well," D-backs manager Torey Lovullo said. "He threw into the sixth inning. There were some touch-and-go moments for him, but overall it was an area where we want our pitchers, our starting pitchers, to explore, and he touched the sixth inning. We were very pleased with that."
San Francisco's Mark Melancon blanked Arizona in the ninth inning to record his second save in two days.

• Posey 'doing fine' after pitch to head
MOMENTS THAT MATTERED
Wild, wacky: What unfolded in the bottom of the fourth inning could not have been foreseen. With the bases loaded and one out, Moore tapped a dribbler that Walker fielded halfway up the first-base line. He threw wildly past home, enabling Brandon Crawford to score. Catcher Jeff Mathis scooped up the ball but misfired past Walker, who was covering home. Joe Panik scored on that play. First baseman Paul Goldschmidt caught up with the ball and threw home, but Jarrett Parker slid under Walker's tag.
Panik sensed as the play began to develop that what ensued might favor the Giants.
"When the pitcher's going towards the line and trying to fire across his body, it's never an easy play," Panik said.
• D-backs' foibles help Giants score 3 on bunt
Not today:Yasmany Tomas' fifth-inning leadoff homer appeared to be a potential catalyst for the D-backs offense that averaged nearly seven runs a game entering Monday. But Moore muzzled Arizona by retiring Brandon Drury and David Peralta on called third strikes, then fanned Walker after Mathis doubled.
"I felt like our approach was a little hurried, a little rushed," Lovullo said. "Matt Moore deserves credit; I don't want to take anything away from what he did."
• D-backs' sizzling offense cooled by Giants
SOUND SMART WITH YOUR FRIENDS
The Giants own a 38-22 record in home openers since the franchise relocated to San Francisco in 1958, including 14-4 since AT&T Park opened in 2000.

WHAT'S NEXT
D-backs:Robbie Ray makes his second start of the year when he takes the ball against the Giants on Tuesday night at 7:15 p.m. MST at AT&T Park. The left-hander also faced the Giants in his first start of the year lasting 5 2/3 innings and allowing three runs.
Giants: The series continues Tuesday at AT&T Park as right-hander Jeff Samardzija opposes Arizona in a 7:15 p.m. PT encounter. Samardzija faced the D-backs last Thursday and surrendered homers to Peralta, Goldschmidt and Jake Lamb.
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