Diamondbacks-Giants Preview

San Francisco manager Bruce Bochy can't explain why the Arizona Diamondbacks have dominated his club in the Bay Area this season.

In danger of being blanked in a three-game home series for the first time ever, the Giants look to avoid a seventh straight defeat there to the Diamondbacks on Sunday.

Arizona (71-77) lost its final four games at San Francisco last season but is 8-1 and has recorded five shutouts, including three in a row, there in 2015. The Diamondbacks, 28-36 against the rest of their road competition, join the 1938 Chicago Cubs as the only teams to shut out the Giants at home at least five times in the same season.

''There's no rhyme or reason,'' Bochy said after Saturday's 6-0 loss. ''They've done a number on us. I'm a little stunned to be honest.''

With their postseason hopes fading, the Giants (77-71) have taken two steps back after winning five of six.

"Getting shut out back-to-back is something I would not have thought would happen," said Bochy, whose team has scored three runs during that six-game home skid to Arizona and none over the last 30 innings.

The Diamondbacks, who have never blanked an opponent over an entire three-game set, own a 1.30 ERA while holding the Giants to a .198 average at AT&T Park this year.

"Our pitching has been really good in this ballpark," Arizona manager Chip Hale told MLB's official website. "And we need to continue it (Sunday) and continue it on the road trip."

Jeremy Hellickson (9-9, 4.78 ERA) allowed eight hits but one run in 6 2-3 innings of a 5-1 victory at AT&T Park on April 19 to improve to 1-1 and lower his ERA to 3.27 against San Francisco this year. However, the right-hander must rebound after he gave up five runs, three hits and two walks before being removed after one inning of Monday's 10-3 loss to San Diego.

"I've got to make an adjustment early and try to keep us in the game," said Hellickson, who also committed an error. "Putting up a five spot before we even get a chance to bat is by far my worst inning of my career.''

Brandon Crawford is 4 for 5 against Hellickson. But since Aug. 20, the All-Star shortstop is 5 for 50 while playing 13 games and missing seven with calf and side injuries.

Hellickson won't have to face Brandon Belt, who was diagnosed with a concussion suffered in Friday's 2-0 defeat.

"He's going to take a little time off," Bochy said. "He showed symptoms (Friday) and that's what we're treating him for."

Tim Hudson (7-8, 4.42), who squared off with Hellickson on April 19, is 1-1 with a 4.91 ERA against the Diamondbacks this season. In his return to the rotation Sept. 8, the right-hander allowed a run in six innings of a 6-2 victory at Arizona.

He again yielded one run Monday but walked three and lasted 4 1-3 innings of a 5-3 victory over Cincinnati.

All-Star A.J. Pollock is 3 for 6 against Hudson this season, and is batting .436 in the nine games at San Francisco in 2015.

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