Demi Lovato, who is a singer, actress and judge on FOX’s "The X Factor," sings the National Anthem before Game 4 of the 2012 World Series between the San Francisco Giants and Detroit Tigers on Oct. 28 at Comerica Park in Detroit.

Actress Zooey Deschanel, star of FOX's "New Girl," performs the National Anthem before Game 3 of the 2012 World Series between the San Francisco Giants and Detroit Tigers on Oct. 27, 2012, at Comerica Park in Detroit.

Actor Colin Hanks sang "Take Me Out to the Ballgame," during the seventh-inning stretch of Game 2 of the World Series at AT&T Park in San Francisco on Oct. 25, 2012.

Actor and singer Matthew Morrison, star of FOX's "Glee," performs the National Anthem prior to Game 2 of the World Series at AT&T Park in San Francisco on Oct. 25, 2012. The Giants played the Tigers in the Series.

Rapper Lil Wayne sings 'Take Me Out to the Ball Game' during the seventh inning as the San Francisco Giants take on the St. Louis Cardinals in Game 6 of the NLCS at AT&T Park on Oct. 21, 2012, in San Francisco.

Actor Jeff Daniels, who lives in Michigan, speaks to the media on Oct. 16, 2012, before Game 3 of the ALCS  between the New York Yankees and Detroit Tigers at Comerica Park.

Founding members of The Greatful Dead Phil Lesh, Bob Weir and San Francisco Giants third base coach Tim Flannery sing the national anthem prior to Game 2 of the NLCS against the St. Louis Cardinals at AT&T Park on Oct. 15, 2012.

Actor and Baltimore native Josh Charles throws out the ceremonial first pitch prior to Game 2 of the ALDS between the Baltimore Orioles and the New York Yankees at Oriole Park at Camden Yards on Oct. 8, 2012, in Baltimore.

San Francisco 49ers quarterback Alex Smith, with San Francisco Giants relief pitcher Sergio Romo, threw out the ceremonial first pitch at Game 1 of the 2012 NLDS between the San Francisco Giants and Cincinnati Reds at AT&T Park. Smith was reprimanded (and nearly fined $15,000) by the NFL for wearing a Giants cap, rather than regulation NFL attire, at a 49ers postgame press conference and the Giants have supported him.

Media mogul and former Atlanta Braves owner Ted Turner attends the National League Wild Card Game between the Atlanta Braves and the St. Louis Cardinals at Turner Field on Oct. 5, 2012 in Atlanta.

Hockey legend Wayne Gretzky supports Canada's baseball team, throwing out the first pitch before the Toronto Blue Jays play the Twins on Oct. 1, 2012, at Rogers Centre in Toronto.

Actor Billy Crystal watches his beloved Yankees take on the rival Boston Red Sox on Oct. 1, 2012, at Yankee Stadium.

Animal actor Crystal, who stars in the NBC sitcom "Animal Practice" alongside New York Yankees OF Nick Swisher's wife JoAnna Garcia, delivers the game ball to the mound for the ceremonial first pitch before a game between Los Angeles Dodgers and San Diego Padres at PETCO Park on Sept. 27, 2012.

Kevin Love of the Minnesota Timberwolves is greeted by Justin Morneau of the Minnesota Twins after throwing out the ceremonial first pitch prior to a game between against the Yankees on Sept. 26, 2012 in Minneapolis.

Country singer Dierks Bentley throws out the first pitch before a game between the Milwaukee Brewers and Washington Nationals at Nationals Park on Sept. 22, 2012 in Washington, DC.

Actor William Shatner watches the game between the Boston Red Sox and the Tampa Bay Rays on Sept. 25, 2012, at Fenway Park.

Sen. John McCain (R-Ariz.) speaks with US Army Spc. Eric Hunter during the fourth inning of a game between Milwaukee Brewers and Washington Nationals at Nationals Park on Sept. 21, 2012 in Washington, DC.

Actor and comedian Rob Schneider throws out the first pitch before the game between the Chicago Cubs and the St. Louis Cardinals at Wrigley Field on Sept. 21, 2012.

Actor and comedian Steve Schrippa, of "The Sopranos" fame, attends the game between the New York Yankees and the Tampa Bay Rays at Yankee Stadium on Sept. 15, 2012.

Actor Sean Astin with the Teenage Mutant Ninja Turtles, was on hand to throw out the first pitch before the game between the Los Angeles Dodgers and the St. Louis Cardinals at Dodger Stadium on Sept. 15, 2012.

Actress Julianne Moore and her director/writer husband Bart Freundlich watch the game between the New York Yankees and the Tampa Bay Rays at Yankee Stadium on Sept. 14, 2012.

Singer Harry Belafonte watches the game between the New York Yankees and the Tampa Bay Rays at Yankee Stadium on Sept. 14, 2012.

NASCAR driver Kasey Kahne thows out the first pitch before the game between the Chicago White Sox and the Detroit Tigers on Sept. 13, 2012, in Chicago. He was in town for the race at Chiagoland Speedway.

Indianapolis 500 and "Dancing With the Stars" champion Hélio Castroneves reacts after throwing out the ceremonial pitch before the game between the Dodgers and the Cardinals at Dodger Stadium on Sept. 13, 2012.

Actor and comedian Bill Cosby speaks with New York Yankees shortstop Derek Jeter prior to a game against the Boston Red Sox at Fenway Park on Sept. 13, 2012.

Olympic medalist in the hurdles Dawn Harper joins Chicago White Sox starting pitcher Chris Sale after she threw out the first pitch before the game between the White Sox and the Detroit Tigers at U.S. Cellular Field on Sept. 10, 2012.

NASCAR driver Austin Dillon prepares to throw out the first pitch before the start of the Chicago Cubs and Washington Nationals game at Nationals Park on Sept. 5, 2012, in Washington, DC.

Actor Matthew Perry talks with Los Angeles Dodgers catcher Matt Treanor after throwing out the first pitch before the game against the San Diego Padres at Dodger Stadium on Sept. 5, 2012.

NASCAR driver Kurt Busch throws out the first pitch prior to a game between the Chicago Cubs and the Washington Nationals at Nationals Park in DC on Sept. 4, 2012.

Christian Haupt, who was discovered by Adam Sandler on YouTube and given a role in "That's My Boy," throws the ceremonial first pitch before the game before between the San Diego Padres and the Los Angeles Dodgers at Dodger Stadium on Sept. 4, 2012.

"Fierce Five" members Gabby Douglas, Kyla Ross and McKayla Maroney attend a game between the San Diego Padres and the Los Angeles Dodgers at Dodger Stadium in Los Angeles on Sept. 3, 2012. The trio threw out the first pitch.

Actor and comedian Jon Lovitz throws out the ceremonial first pitch prior the game between the Chicago Cubs and the San Francisco Giants at Wrigley Field on Sept. 1, 2012.

Retired boxer Tommy "The Hitman" Hearns throws out a ceremonial pitch before a game between the Detroit Tigers and the Chicago White Sox in Detroit on Aug. 31, 2012.
 

Olympic gymnast/gold medalist Aly Raisman hangs out with Wally the Boston Red Sox mascot prior to a game against the Kansas City Royals at Fenway Park on Aug. 25, 2012. Raisman grew up in Massachusetts.

Dodgers owner Magic Johnson hosts his former Lakers coach Pat Riley at a Dodgers game on Aug. 22, 2012.

Comedian-actor George Lopez chats with Los Angeles Dodgers manager Don Mattingly before the game against the San Francisco Giants at Dodger Stadium on Aug. 21, 2012.
 

Singer-songwriter and former "American Idol" contestant Haley Reinhart visits with Los Angeles Dodgers owner Magic Johnson before the game against the San Francisco Giants at Dodger Stadium on Aug. 20, 2012.
 

Country singer Carrie Underwood throws out the first pitch before the Toronto Blue Jays -New York Yankees game on Aug. 12, 2012 in Toronto.

Three-time Olympic gold medalist Misty May-Treanor skipped the closing ceremonies in London to watch her hubby Matt and the Los Angeles Dodgers take on the Miami Marlins in Miami on Aug. 11, 2012. Matt Treanor used to play for the Marlins and the couple has a home in Florida.

Actor William Shatner threw out the ceremonial first pitch during Star Trek Night at Dodger Stadium on Aug. 3, 2012.

Recording artist Paul Simon watches the game between the New York Yankees and the Boston Red Sox at Yankee Stadium on July 29, 2012.

Actress Virginia Madsen throws out the first pitch before the game between the Chicago Cubs and the St. Louis Cardinals on July 28, 2012, at Wrigley Field.

Comedian/author/radio and TV host Steve Harvey throws out the ceremonial first pitch before a baseball game between the Chicago Cubs and the St. Louis Cardinals at Wrigley Field on July 29, 2012.

Think Mets fans are above booing a mother-to-be? Nope. Reality television star Nicole "Snooki" Polizzi heard it from the crowd when she was shown on the video board during a game against the Nationals at Citi Field on July 23, 2012.

Actor Zach Galifianakis throws out the ceremonial first pitch before the game between the Miami Marlins and the Chicago Cubs at Wrigley Field on July 18, 2012.

Actor Will Ferrell eats a slice of pizza with Chicago Cubs starting pitcher Ryan Dempster before throwing out the first pitch at the game between the Chicago Cubs and the Miami Marlins at Wrigley Field on July 18, 2012.

New York Jets center Nick Mangold attends the game between the New York Yankees and the Toronto Blue Jays at Yankee Stadium on July 18, 2012.

Actor Jim Belushi greets Chicago Cubs center fielder Tony Campana (before the game against the Miami Marlins at Wrigley Field on July 17, 2012.

Actor and comedian Billy Crystal attends the game between the New York Yankees and Toronto Blue Jays at Yankee Stadium on July 16, 2012.

Filmmaker Spike Lee catches a bat lost by Mark Teixeira of the New York Yankees during their game against the Los Angeles Angels on July 15, 2012 at Yankee Stadium.

Recording artist and former "American Idol" contestnat Kellie Pickler performs "God Bless America" during the seventh-inning stretch of the 2012 MLB All-Star Game at Kauffman Stadium in Kansas City, Mo., on July 10, 2012.

Country music singer Luke Bryan performs the national anthem before the 83rd MLB All-Star Game at Kauffman Stadium on Tuesday, July 10, 2012 in Kansas City, Mo.

"American Idol " Season 10 winner Phillip Phillips performs before the 2012 MLB All-Star Game at Kauffman Stadium in Kansas City, Mo.

Hall of Famer Hank Aaron waves to the crowd during the Home Run Derby, Monday, July 9, 2012, in Kansas City, Mo.

"Desperate Housewives" hunk James Denton tries to make a diving catch and takes out the outfield fence at the All-Star Legends & Celebrity Softball Game at Kauffman Stadium in Kansas City, on July 9, 2012.

Model Christine Teigen gets the bat on the ball at the All-Star Legends & Celebrity Softball Game on July 9, 2012, at Kauffman Stadium in Kansas City, Mo.

Former "American Idol" contestant Haley Reinhart participates in the All-Star celebrity softball game on July 9, 2012 in Kansas City.

"Mad Men" star Jon Hamm warms up before the All-Star Celebrity Softball Game on July 8, 2012, at Kauffman Stadium in Kansas City, Mo.

Actor Dax Shepard throws the ceremonial first pitch prior to the start of the game between the Kansas City Royals and the Detroit Tigers Comerica Park on July 8, 2012, in Detroit, Michigan. Shepard is a Michigan native.

Recording artist and former "American Idol" contestant Chris Daughtry performs after the game between the Pittsburgh Pirates and San Francisco Giants at PNC Park in Pittsburgh on July 7, 2012.
 

CNN journalist John King throws out the first pitch before the second game of a doubleheader between the Boston Red Sox and the New York Yankees in Boston on July 7, 2012.
 

Hall of Fame NBA player Bill Walton gets pitching advice from San Diego Padres first base coach Dave Roberts  prior to throwing out the first pitch before the Padres-Reds game at San Diego's Petco Park on July 5, 2012.

Country music recoreding artist Trace Adkins sings the National Anthem prior to a game between the Boston Red Sox and New York Yankees at Fenway Park on July 7, 2012.

Country music recording artist Billy Ray Cyrus sings "God Bless America" during the seventh inning stretch of the Reds-Dodgers at Dodger Stadium on July 4, 2012.

Actor, Charlie Sheen, left, and friend Tony Todd show off their baseball bats during the seventh inning of a game between the Reds and Dodgers in Los Angeles on July 4, 2012.

Actor and comedian Chris Hardwick reacts after throwing out the first pitch before the game between the Cincinnati Reds and the Los Angeles Dodgers at Dodger Stadium on July 2, 2012.

Yankees legends Whitey Ford (left) and Yogi Berra were on hand for the Yankees Old Timers festivities before the Yankees played the Chicago White Sox at Yankee Stadium on July 1, 2012.

Sacramento Kings point guard Isaiah Thomas throws out the ceremonial first pitch prior to the game between the Seattle Mariners and the Boston Red Sox at Safeco Field on July 1, 2012.

American heavyweight boxer, kickboxer and actor Shannon Briggs throws out the ceremonial first pitch before a game between the Philadelphia Phillies and the Miami Marlins at Marlins Park on July 1, 2012.

Phillip Bailey, lead singer of Earth, Wind and Fire, throws out the first pitch before the game between the Tampa Bay Rays and Detroit Tigers at Tropicana Field on June 30, 2012.

Actress Jane Lynch, who stars on FOX's "Glee" sings during the seventh inning stretch at the game between the Chicago Cubs and New York Mets at Wrigley Field on June 27, 2012.

New York Giants football coach Tom Coughlin throws out the ceremonial first pitch before a game between the New York Yankees and the Chicago White Sox at Yankee Stadium on June 20, 2012.

Actors and friendly exes Denise Richards and Charlie Sheen take in the Yankees-Mets game Saturday with their kids at Citi Field in New York. Sheen also made an appearance in the broadcast booth with Tim McCarver and Joe Buck.

Recording artist/actor/record producer Ne-Yo tosses a ball before an interleague game between the Chicago White Sox and the Milwaukee Brewers in Chicago on June 22, 2012.

Actor and part-owner of the minor league Charleston Riverdogs Bill Murray is recognized by the crowd for his election to the South Atlantic League Hall of Fame at the South Atlantic League all-star game held at the Joseph P. Riley Jr. Ballpark in Charleston, SC, on June 19, 2012.

Actors David Koechner, Eric Stonestreet, Paul Rudd, Jon Hamm, Jason Sudeikis and Rob Riggle sing "Take Me Out to the Ball Game" during an interleague game between the St. Louis Cardinals and Kansas City Royals at Kauffman Stadium in Kansas City on June 22, 2012.

Actors Jason Sudeikis and Olivia Wilde, who are dating, attend an interleague game between the St. Louis Cardinals and Kansas City Royals at Kauffman Stadium in Kansas City on June 22, 2012.

NFL Hall of Famer and former Washington Redskins player Darrell Green throws out the ceremonial first pitch before the game between the Washington Nationals and the Tampa Bay Rays in DC on June 21, 2012.

Recording artist Jon Secada performs the national anthem before an interleague game between the Oakland Athletics and the Los Angeles Dodgers at O.co Coliseum in Oakland on June 20, 2012.

New York Giants quarterback Eli Manning holds his daughter Eva while posing with New York Mets third baseman David Wright before the game against the Cincinnati Reds at Citi Field on June 17, 2012.

Recording artist and rock 'n' roll royalty Lisa Marie Presley throws out the first pitch before the game between the Chicago White Sox and the Chicago Cubs at U.S. Cellular Field on June 20, 2012.

Former Chicago Bulls star Scottie Pippen throws out the first pitch before a game between the Chicago White Sox and the Chicago Cubs at U.S. Cellular Field on June 18, 2012.

Pro golfer Bubba Watson attends the game between the New York Mets and the Baltimore Orioles at Citi Field on June 18, 2012.

Comedian/actor Cedric the Entertainer chats with Atlanta Braves outfielders Michael Bourn and Jason Heyward during batting practice before a game against the New York Yankees at Yankee Stadium on June 18, 2012.
 

Actor Josh Henderson, who plays John Ross on TNT's "Dallas" revamp, throws out the first pitch before the game between the Chicago White Sox and the Los Angeles Dodgers at Dodger Stadium on June 15, 2012.

Singer John Popper of the band Blues Traveler throws out the first pitch before the game between the Chicago Cubs and the Detroit Tigers at Wrigley Field on June 12, 2012.

New York Giants quarterback Eli Manning holds his daughter Eva while posing with New York Mets third baseman David Wright before the game against the Cincinnati Reds at Citi Field on June 17, 2012.
 

Actor Vince Vaughn, a Chicago native, throws out the first pitch prior to the game between the Chicago Cubs and the Boston Red Sox at Wrigley Field on June 19, 2012. He also sang "Take Me Out to the Ballgame" during the seventh-inning stretch.

Singer Alice Cooper chats with Hall of Famer and Royals great George Brett in the dugout before a Royals game vs. the Milwaukee Brewers at Kauffman Stadium in Kansas City on June 14, 2012.

PGA Tour golfer Dustin Johnson visited AT&T Park ahead of the US Open at The Olympic Club in San Francisco and hit some balls into McCovey Cove before throwing out the cermonial first pitch and taking in the game between the San Francisco Giants and the Houston Astros on June 13, 2012. Giants pitcher Matt Cain threw a perfect game later that night.

PGA golfer Rory McIlroy, of Northern Ireland, chills with San Francisco Giants pitcher Ryan Vogelsong before a game between the Giants and the Houston Astros in San Francisco, on Tuesday, June 12, 2012. McIlroy was in town ahead of the US Open at The Olympic Club in San Francisco.

Singer-dancer and former "American Idol" judge Paula Abdul dances with the Phillie Phanatic during a game between the Los Angeles Dodgers and the Philadelphia Phillies at Citizens Bank Park in Philadelphia on June 7, 2012.

Retiring Detroit Red Wings defenseman Nicklas Lidstrom delivers the lineup card before the game between the Detroit Tigers and the New York Yankees at Comerica Park on June 1, 2012.

Dallas Cowboys quarterback Tony Romo throws out the ceremonial first pitch before the game between the Texas Rangers and the Seattle Mariners at Rangers Ballpark in Arlington, Texas, on May 30, 2012.

Country music artist Scotty McCreery throws out the first pitch at Turner Field in Atlanta before a game between Atlanta Braves and Washington Nationals on May 26, 2012. McCreery played high school baseball before winning "American Idol" and embarking on a music career.

Actor Jason Bateman attends the game between the Atlanta Braves and the Washington Nationals at Turner Field in Atlanta on May 27, 2012.

Olympic swimmer Amanda Beard attends the MLB game between the Milwaukee Brewers and the Arizona Diamondbacks at Chase Field in Phoenix on May 27, 2012.

Motley Crue bassist Nikki Sixx and welterweight boxer Victor Ortiz pose together before the game between the Houston Astros and the Los Angeles Dodgers at Dodger Stadium on May 27, 2012.

Hip-hop artist Lil' Wayne watches a game between the Miami Marlins and the San Francisco Giants at Marlins Park on May 26, 2012, in Miami.

See more shots of celebrities at baseball games.