SAN FRANCISCO — Ecstatic baseball fans crammed the streets of San Francisco on Wednesday for a confetti-drenched parade and rally honoring the World Series champion Giants – a Halloween treat made even sweeter as a repeat performance from 2010.

Tens of thousands of people decked out in the team's holiday-appropriate orange and black stood 30 deep behind barriers, climbed trees, camped out overnight and mounted rooftops for a chance to see their favorite players wave from convertibles and get serenaded by Tony Bennett singing "I Left My Heart in San Francisco."

Giants Manager Bruce Bochy, who hoisted the World Series trophy from the back of a gold Rolls Royce during most of the 1 1/2-mile procession, credited fans and his players' "unselfish play" for helping to lift San Francisco to its second World Series victory in three years, an improbable double play for a franchise that had not won the title since 1954.

"In 2010, we characterized the club as misfits that came together and got it done," Bochy told the roaring hordes gathered for the rally in Civic Center Plaza. He said the tagline of the 2012 Giants was "never say die," a reference to the team's come-from-behind, post-season dominance.

"I thank you for always being there, for never giving up," he said. "Thank you for showing up wherever we've been and making this one of the greatest moments of my life."

As with the 2010 parade, this year's two-hour edition drew a cross-section of the region's diversity. Children who were allowed to skip school squeezed cap-to-glove alongside older couples who had been Giants fans since the team arrived in San Francisco from New York in 1958.

Series MVP Pablo Sandoval, who swatted three home runs in his first three at bats in Game 1, and second baseman Marco Scutaro, who batted in the winning run of the game that clinched the title, addressed the throngs at the rally in Spanish.

"This is the second, but there are going to be a lot more," Sandoval said, expressing special thanks to the Bay Area's Latino community. "You should enjoy this and feel this in your hearts."

Casandra Buenrostro, 25, who arrived at the plaza at 5 a.m. so she could get pictures of Sandoval, did.

"He made me cry," Buenrostro said. "He's an inspiration."

Earlier in the day, clouds of black, orange and white confetti were shot from cannons positioned on roofs and along the canyon-like, skyscraper-lined street. Spectators and parade participants, who included legendary Giants alumni Willie Mays, Willie McCovey and Juan Marichal and politicians such as House Minority Leader Nancy Pelosi, reveled in the showers.

The unifying energy of the Giants' latest victory was evident as San Francisco 49ers quarterback Alex Smith drove the car carrying Giants pitcher Matt Cain and his family, while 49ers coach Jim Harbaugh did the honors for first baseman Brandon Belt.

The convertibles gave fans clean views along the parade route that began at the foot of Market Street near San Francisco Bay and ended on the steps of City Hall, across from the overflowing plaza.

"Since I was a kid, I wanted to play on the Giants and win a World Series. So it's fun to be here," said shortstop Brandon Crawford, who grew up in the Bay Area.

Star reliever Sergio Romo, wearing a T-shirt that read, "I just look illegal," whipped the roaring crowd into a frenzy when he got out of his convertible and mingled.

"It's unbelievable! Unbelievable! Just great!" said fired-up right fielder Hunter Pence, who was acquired in a midseason deal and led pregame pep talks. At the rally, Pence persuaded his teammates to jump around the stage to demonstrate the ritual he called the "slow-clap."

"I loved it when they started acting goofy," said Janet Clark, 55. "That's exactly who the Giants are."

With the victory parade coinciding with Halloween, costumed masses brought an even more festive feel to what city officials hoped would be a family friendly, alcohol-free event.

Philip and Alyssa Lozano got up in Sacramento at 3:30 so they and their son could catch a ferry in time to witness the whole spectacle. Nine-year-old Christian Lozano was dressed up for Halloween as, what else, a panda, in tribute to Sandoval, whose nickname is the "Panda."

"We've been representing the Giants for a while and couldn't make it to the parade in 2010," Philip Lozano said.

San Francisco police spokesman Michael Andraychak said 22 arrests were made, including 13 for public intoxication, but said the crowds generally were cooperative.

Some fans carried brooms as a reminder of the Giants' four-game sweep of the Detroit Tigers. Later, San Francisco Mayor Ed Lee handed Giants President Larry Baer a ceremonial metal "broom to the city" along with the customary key.

Alex Warlen and Kelly Simms, both 17, were among the hundreds of people who camped out overnight in the plaza to ensure they had prime viewing spots. Warlen is a pitcher and Simms a catcher for the softball team at San Francisco's Mercy High School. The team is co-champion of its division.

"Buster is the reason I'm a catcher," read a sign Simms carried, referring to the Giants' Buster Posey. The high school seniors said Mercy administrators gave students the day off, so they weren't cutting school.

"We would have skipped anyway," Simms said.

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Associated Press writers Garance Burke and Terry Collins contributed to this report.

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  • San Francisco Giants catcher Buster Posey and his wife Kristen ride in a car as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • The cars of San Francisco Giants catcher Buster Posey, foreground, and third baseman Pablo Sandoval are showered with confetti during the baseball team's World Series victory parade on Market Street, Wednesday, Oct. 31, 2012, in this view from the top of the Sheraton Palace hotel in San Francisco. The team's second championship in three years went along Market Street and ended with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • San Francisco Giants manager Bruce Bochy holds the World Series trophy as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012 in San Francisco.(AP Photo/Jeff Chiu)

  • Fans cheer during the San Francisco Giants' baseball World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • Confetti rains down on people lining Market Street during the San Francisco Giants' World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. The parade for the team's second baseball championship in three years went along Market Street and ended with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • San Francisco Giants pitcher Matt Cain, his wife, Chelsea, and daughter Hartley ride in a car as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco.(AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants' Marco Scutero, his wife Marines and their daughter Valeria ride in a car during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants fans cheer during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • Fans Elizabeth Santos, left and Joseph Foranda wear World Series trophy hats during the San Francisco Giants' baseball World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco.(AP Photo/Sanchez)

  • Marco Scutaro

    San Francisco Giants second baseman Marco Scutaro, of Venezuela, waves while riding in the car at lower left during the baseball team's World Series victory parade on Market Street, Wednesday, Oct. 31, 2012, in San Francisco. Scutaro was the MVP of the National League Championship Series. The parade for the team's second championship in three years went along Market Street and ended with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • San Francisco Giants pitcher Tim Lincecum acknowledges fans during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants pitcher Tim Lincecum acknowledges fans during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants fans cheer during the team's World Series baseball victory parade, Wednesday, Oct. 31, 2012 in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants manager Bruce Bochy holds the World Series trophy as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants pitcher Sergio Romo rides in a car during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants pitcher Sergio Romo rides in a car during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants pitcher Sergio Romo holds up a flag during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • From left, San Francisco Giants fans Alison Griffith, Katie Peck and Beth Giotta cheer during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants pitcher Brian Wilson rides in a cable car during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • San Francisco Giants pitcher Sergio Romo looks up as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Marcio Jose Sanchez)

  • Barry Zito, Amber Seyer

    San Francisco Giants pitcher Barry Zito waves while sitting next to his wife, Amber Seyer, during the baseball team's World Series victory parade Wednesday, Oct. 31, 2012, in San Francisco. The team's second championship parade in three years parade ended with a celebration in front of City Hall. (AP Photo/Marcio J. Sanchez)

  • Marco Scuataro

    San Francisco Giants second baseman Marco Scutaro, of Venezuela, gives a thumbs up to people lining balconies during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012 in San Francisco. The parade for the team's second championship in three years ended with a celebration in front of City Hall. (AP Photo/Marcio J. Sanchez)

  • People cheer San Francisco Giants pitcher Tim Lincecum as he passes in the baseball team's World Series victory parade on Market Street, Wednesday, Oct. 31, 2012, in San Francisco. The team's second championship parade in three years went along Market Street and ended with a celebration in front of City Hall. (AP Photo/Nic Coury)

  • Larry Baer, Ed Lee

    San Francisco Giants CEO Larry Baer, left, laughs after being presented the key to the city and a gold broom from San Francisco Mayor Ed Lee, right, during the baseball team's World Series victory celebration at City Hall, Wednesday, Oct. 31, 2012, in San Francisco. The team's second championship in three years included a parade along Market Street and ended with a celebration in front of City Hall. (AP Photo/Marcio J. Sanchez)

  • Bruce Bochy

    San Francisco Giants manager Bruce Bochy speaks during a ceremony celebrating the baseball team's World Series victory at City Hall in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Jeff Chiu)

  • San Francisco Giants players pose for photographs after a ceremony celebrating the baseball team's World Series victory at City Hall in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Jeff Chiu)

  • Pablo Sandoval, Marco Scutaro

    San Francisco Giants' Pablo Sandoval, left, and Marco Scutaro speak during a ceremony celebrating the baseball team's World Series victory at City Hall in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Jeff Chiu)

  • Tony Bennett

    Singer Tony Bennett raises his arms as he is surrounded by players from the San Francisco Giants after a ceremony celebrating the baseball team's World Series victory at City Hall in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Jeff Chiu)

  • Pablo Sandoval, Marco Scutaro

    San Francisco Giants third baseman Pablo Sandoval, left, and second baseman Marco Scutaro, right, of Venezuela, smile while standing at the podium during the baseball team's World Series victory celebration at City Hall Wednesday, Oct. 31, 2012, in San Francisco. Sandoval was the World Series MVP and Scutaro was the MVP of the National League Championship Series. The team's second championship in three years included a parade along Market Street and ended with a celebration in front of City Hall. (AP Photo/Marcio J. Sanchez)

  • San Francisco Giants manager Bruce Bochy holds the World Series trophy as confetti falls during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants pitcher Sergio Romo, bottom center, cheers as he is introduced at City Hall during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants pitcher Sergio Romo, bottom center, cheers as he is introduced at City Hall during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants fans cheer at City Hall during the baseball team's World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • Pablo Sandoval

    San Francisco Giants third baseman and World Series MVP Pablo Sandoval is showered with confetti on Market Street while riding in the baseball team's World Series victory parade in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Marcio J. Sanchez)

  • Buster Posey

    San Francisco Giants catcher Buster Posey waves and is showered with confetti during the Giants' baesball World Series victory parade on Market Street in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Marcio J. Sanchez)

  • Pablo Sandoval

    San Francisco Giants third baseman and World Series MVP Pablo Sandoval waves while riding in the baseball team's World Series victory parade on Market Street in San Francisco, Wednesday, Oct. 31, 2012. (AP Photo/Marcio J. Sanchez)

  • San Francisco Giants pitcher Matt Cain, his wife Chelsea, and daughter Hartley ride in a car as confetti falls during the San Francisco Giants World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • DeDe Krake, left, and Stacy Hunt, right, of Auburn, Calif., carry a tiger on a broom while walking along Market Street before the start of the San Francisco Giants World Series victory parade Wednesday, Oct. 31, 2012 in San Francisco. The team's second championship in three years goes along Market Street and ends with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • Fans cheer at the start of the San Francisco Giants World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. The Giants swept the Detroit Tigers in three games to win the World Series. (AP Photo/Marcio Jose Sanchez)

  • Fans hold up their children, cousins Reagan Hagerstrand, 10-months, and Ryan Magnani, 1, right, during the San Francisco Giants World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • San Francisco Giants manager Bruce Bochy hugs fan Jackie Day, 14, before the San Francisco Giants World Series victory parade, Wednesday, Oct. 31, 2012, in San Francisco. (AP Photo/Jeff Chiu)

  • People line Market Street before the start of the San Francisco Giants World Series victory parade Wednesday, Oct. 31, 2012 in San Francisco. The team's second championship in three years goes along Market Street and ends with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • Pearl Garvin, of Mountain View, Calif., holds a sign while waiting on Market Street for the start of the San Francisco Giants World Series victory parade Wednesday, Oct. 31, 2012, in San Francisco. The team's second championship in three years goes along Market Street and ends with a celebration in front of City Hall. (AP Photo/Eric Risberg)

  • San Francisco Giants Pablo Sandoval holds the MVP trophy as kids wait for his autograph before the start of the victory parade in San Francisco, Wednesday, Oct. 31, 2012. The Halloween Day World Series victory parade is perfectly suited for the hundreds of thousands of orange-and-black-clad Giants fans expected to flood into the city. The team's second championship in three years will head down Market Street Wednesday afternoon and end with a celebration in front of City Hall. (AP Photo/Marcio Jose Sanchez)