SAN FRANCISCO -- Carlos Beltran was out of the Giants starting lineup for the third straight day with a strained right wrist, but manager Bruce Bochy remained optimistic Beltran would be ready to go Friday in Florida.

Acquired at the non-waiver Trade Deadline to boost San Francisco's weak-hitting lineup, Beltran has played in 11 games, batting .244 with a double, two triples and two RBIs. He felt his wrist flare up in his final at-bat Sunday, leaving the game early. He has continued to undergo treatment throughout the Giants' three-game series against the Pirates at AT&T Park, but the club has been cautious in order to avoid risking further injuries.

"We're still hopeful that Friday will be a good day to get him going again. He's making improvement," Bochy said. "I talked to him a little bit this morning, and he said it's getting better. With the day off and the treatment he's getting today, he's going to be OK to go."

If Beltran hasn't improved by Friday, however, a trip to the disabled list could become an option -- something Bochy hoped to avoid.

"I would certainly hope not. We don't think so. We're going to do what we can not to let that happen," Bochy said. "But again, Friday when we'll check on him and evaluate him, that will help that decision."

Schierholtz sidelined by sore hip

SAN FRANCISCO -- The Giants' outfield depth took another hit Tuesday night when Nate Schierholtz tweaked his right hip flexor during the Giants' 6-0 win over the Pirates, an injury that kept the left-handed-hitting Schierholtz out of the starting lineup against Pittsburgh right-hander Jeff Karstens.

Schierholtz said he began feeling sore as soon as he got up from sliding into home plate during the eighth inning Tuesday night, scoring a run on Cody Ross' single and a series of Pirates fielding errors. While Giants manager Bruce Bochy thought Schierholtz would be available to pinch-hit or pinch-run late in Wednesday's game, Schierholtz didn't sound quite as optimistic, saying he would be happy if it only kept him out one day.

Much like Bochy thought Thursday's off-day would do Carlos Beltran well, he thought two days of rest and treatment would have Schierholtz ready to go Friday in Florida.

Schierholtz's .471 average against Pittsburgh is the highest all-time clip with a minimum of 30 at-bats. Aaron Rowand, a right-handed hitter batting just .215 against righties this season, started in left field alongside Andres Torres in center and Ross in right.

Giants tie record with 19th straight solo homer

SAN FRANCISCO -- When baseball fans think of the Giants and home run records, two numbers probably jump to mind: 73 and 762, Barry Bonds' single-season and career marks.

But the Giants matched another Major League home run record Wednesday afternoon, albeit a less impressive one, with a different number: 19, as in the number of consecutive solo home runs the club has hit. That streak matches the one held by the 1914 Phillies.

The record-tying home run came off the bat of Pablo Sandoval in the first inning of the Giants' 9-2 loss to the Pirates on Wednesday. The Giants' last multirun homer came more than a month ago, when Nate Schierholtz's walk-off round-tripper on July 6 gave San Francisco a 14-inning victory over the Padres.

Giants manager Bruce Bochy knew the record was largely indicative of how poorly the top of his lineup has been getting on base. But he didn't know how his club could quickly remedy that problem.

"I wish I had an easy answer for that, but they just have to get it going," Bochy said. "I don't know how else to say it."

Stewart appreciates support after first homer

SAN FRANCISCO -- The ball that Chris Stewart slammed into the left-field stands Tuesday night for his first Major League home run was still sitting on a shelf in Stewart's locker Wednesday morning, but it will soon find a new home.

Stewart, a Minor Leaguer for most of his career, said he would take the ball home, joining balls commemorating his first big league hit, the first shutout he caught in the Majors and other autographed memorabilia. After receiving a hearty welcome upon returning to the dugout Tuesday night and plenty of praise from manager Bruce Bochy and teammates, Stewart said his phone was abuzz with text messages and phone calls from seemingly everyone he knew.

"[Guillermo] Mota was on the top step with the biggest smile I've ever seen. Everybody was just super elated in the dugout," Stewart said. "It just shows you how many guys are here pulling for everybody and happy when good things happen to people. ... It's just nice that there's so many people behind me, supporting me and just truly happy for me."

Stewart was cracking self-deprecating jokes after the round-tripper Tuesday night. Asked how many times in the past he had felt like he finally cranked his first homer, Stewart responded, "Rarely. I can probably count them all on one finger."

The 29-year-old catcher has been lauded by the Giants pitching staff for how well he calls games and monitors the running game, and he said Wednesday he hopes he can continue contributing with his bat as well.

"Obviously you don't go up there trying to hit a home run, but my goal is to go up there and put a good swing on a good pitch. If it happens to end up over the fence on that, so be it," Stewart said. "But I'm just as happy with a line-drive single with runners at second and third and getting any guys in. Any way I can produce and help this team get some runs, get some wins, I'm willing to do."

Worth noting

• Bochy said infielder Miguel Tejada (abdominal strain) was doing better and will continue to take ground balls and hit, but he is still not quite ready to start a Minor League rehab assignment. Tejada will travel with the club to begin its upcoming 10-game road trip.

"Once we think he's closer to 100 percent, then he'll start his rehab," Bochy said.

• Astros right-hander Henry Sosa, dealt by the Giants at the Trade Deadline to acquire second baseman Jeff Keppinger, will make his first Major League start Wednesday night at Arizona.