ST. LOUIS -- Giants third baseman Pablo Sandoval will start a rehabilitation assignment with Class A San Jose beginning Friday. San Francisco manager Bruce Bochy said Sandoval will likely play two or three games in San Jose before rejoining the Giants.

Sandoval, who is expected to play five innings and start at third base for San Jose on Friday, was placed on the 15-day disabled list on July 28 retroactive to July 25 with a left hamstring strain. He last played July 24 and became eligible to come off the DL on Thursday.

The 25-year-old Sandoval is batting .299 with 33 RBIs in 97 games this season.

Giants unleashing big offense on road

ST. LOUIS -- Bruce Bochy's eyebrows raised in an expression that suggested both surprise and satisfaction.

After his club had just routed the Cardinals, 15-0, at Busch Stadium on Wednesday night, the Giants manager was asked if he was aware his team was leading the league in runs scored on the road.

Bochy was not, but he was sure happy to hear it.

"It's hard to explain," Bochy said. "Obviously [AT&T Park] is not conducive to hitting. We know that, but for us to be where we're at as far as Major League teams, that's amazing really to me. That's not our type of game that we play, but it's great that we're scoring runs on the road."

The Giants entered Thursday leading the National League with 290 runs scored in away games this season and trail only the Angels (307) for most in the Majors. Conversely, San Francisco is 29th in baseball with 180 runs at home, leaving it 18th with 470 total runs.

San Francisco on Thursday wrapped up a seven-game road trip in which it's scored at least 15 runs twice and has averaged nine runs per game while going 5-1. While the Giants' bats have been red hot, third baseman Marco Scutaro noted that it's not just the offense getting it done.

The Giants have allowed fewer than four runs per game on the road trip, and Scutaro said success is to be expected on the road when everything is clicking.

"I think there's no doubt we play in a tough park in San Francisco," he said. "It's hard to hit [there]. But on the other hand, the way you win games is on pitching and defense, and we have very good pitching. Lately, we've just been playing as a team. We've put defense and offense together and you can see the result."

Giants' newcomers contributing nicely

ST. LOUIS -- Having been traded before, Ryan Vogelsong knows well the pressure a player can't put on himself when he changes environments and is expected to produce right away.

With that in mind, Vogelsong, along with the rest of his Giants teammates, can't help but be impressed with what both recently acquired Hunter Pence and Marco Scutaro have done in their short time with San Francisco.

"Marco is a solid player, and he's been a solid player his whole career. Obviously Hunter, he's a front-line player in this league," Vogelsong said after the new Giants made big contributions in Wednesday night's win in St. Louis. "Hopefully those guys are settling in a bit. They're both giving us professional at-bats," Vogelsong said. "That's all we're looking for."

Scutaro's seven RBIs on Wednesday -- which included a ninth-inning grand slam -- were a career high. Pence added a pair of RBIs for his second multi-RBI game in the last four days.

When asked if he was feeling settled in yet, Pence barely hesitated.

"Yeah, I do," Pence said. "They've made it pretty easy on me. It's a good group of guys, a good staff. I'm as settled in as you get and I'm enjoying being a part of this run we're making."

"He can hit," Bochy said of Pence. "He came over and what I said earlier was, 'Get settled in.' I see it. I thought that was big for him to get those timely hits."

As for Scutaro, Bochy is greatly appreciative of the versatility Scutaro offers. The 37-year-old utility man has played both third and second for the Giants.

While Scutaro was acquired to fill the void at third base with Pablo Sandoval on the mend with a strained left hamstring, Bochy said with the way Scutaro has been swinging the bat, he'll have to find a way to fit Scutaro into the lineup when Sandoval returns likely within the next week.

"Right now, sure," Bochy said. "[Scutaro will] continue to be out there. What he gives you right now is depth."

Worth noting

• Bochy said catcher Buster Posey will likely get one of the Giants' next three games off. Backup catcher Hector Sanchez replaced Posey in the eighth inning of San Francisco's win Wednesday.

"He's honest," Bochy said of Posey. "And he really wants to go right now."

• Friday's game time against Colorado has been moved from 7:15 p.m. PT to 7:35 p.m. to accommodate Matt Cain's perfect-game celebration before the game.

• The Giants went three up, three down in the first inning Thursday, putting an end to a streak of six straight games of having scored in the first inning.