After Vogelsong authored his latest sub-par outing on Sunday at Arizona, Bochy said he would remain in the starting rotation in an attempt to work through his problems.
"Every time he goes out there, I feel good about what's going to happen," Bochy said. "I know he's having his down period right now, but he'll come out of this. If I saw something that would make me want to skip him, sure. But his stuff is too good to see what happened today happen.
"He's one of our guys and I have all the confidence in the world in him right now."
Vogelsong can reward that faith on Friday night, when the National League West-leading Giants welcome the Padres to AT&T Park for the first of a three-game series. San Francisco, which has won four straight to start its homestand, trimmed its magic number for clinching the division to three with a 9-2 win over the Rockies and the Dodgers' 4-1 loss to the Nationals on Thursday.
Vogelsong (12-9, 3.65 ERA) was a big part of the Giants' success for much of the season, entering his Aug. 13 start with an NL-best 2.27 ERA. In seven outings since, that mark is at 10.31, although Vogelsong still has a 38-to-11 strikeout-to-walk ratio over that span.
The stretch includes a start at San Diego on Aug. 19, when Vogelsong struck out seven, but gave up three runs on eight hits in three innings. On Sunday, the D-backs reached him for seven runs -- six earned -- in 3 1/3.
"I feel healthy; I feel strong; my stuff's there. I'm just not getting results," Vogelsong said afterward. "That's why this is getting perplexing, because my stuff's there. This doesn't make much sense to me right now."
The Padres come into the series having lost two of three to begin their six-game road trip, but they have won 10 of 14 overall. San Diego will have rookie Casey Kelly make his first start against the Giants and fifth overall.
Kelly (2-1, 5.85) gave up 11 earned runs in his previous two starts before Saturday, when he held the Rockies to two runs over six innings, while striking out six.
"The breaking ball was very solid, both for the called strike and the below-the-zone strikeout," Padres manager Bud Black said. "What I liked was his velocity came back today. The ball had carry. The ball-strike ratio was great. He was very efficient."
Padres: Quentin still dealing with knee issues
Left fielder Carlos Quentin didn't play against the D-backs on Thursday, after exiting Wednesday's game in the fifth inning with soreness in his surgically repaired right knee.
Quentin, second on the team with 16 home runs, had missed the last six games before Wednesday, and there is no timetable for his return.
"If he's available to play, he'll play," Black said.
Center fielder Cameron Maybin went 1-for-4 with a double on Thursday after missing the previous two games with soreness in his left Achilles tendon. Maybin has hit safely in his last nine games and 16 of 17, batting .373 over that span.
Giants: Panda power surge
Pablo Sandoval went into Wednesday's game carrying a homerless streak of 161 at-bats, the second-longest of his career. He has corrected that in a big way.
Sandoval snapped the streak in the first inning on Wednesday, then walloped two homers on Thursday. It was his fifth career multi-homer game and first since last Sept. 18, also against the Rockies. It also was the first time in the switch hitter's career that he went deep from both sides of the plate in the same game.
When Buster Posey followed Sandoval's second homer with a shot of his own, it was the second time this season, and first since April 11, that the Giants went back to back.
The Giants lead the season series 8-4, with the teams slated to play six of their next nine games against each other.