Vanessa Hudgens
While cheering on the New York Giants, the actress attends the kick-off of Booking.com's Football House in the Big Apple.
Justin Chambers, Jason George, Jesse Williams & Kevin McKidd
In between filming scenes for Grey's Anatomy, the Hollywood stars head to Safeco Field to throw out the first pitch and cheer on the Seattle Mariners.
Jamie Foxx
Game on! The A-list actor shows off his own baseball skills at MLB's All-Star and Legends Celebrity Softball Game at Marlins Park.
Kristin Chenoweth
Before singing the national anthem, the Broadway actress hangs out with the Philadelphia Phillies mascot at Citizens Bank Park.
Matthew McConaughey
Play ball! The A-list actor and his kids hang out with the Cleveland Indians mascot during a baseball game at Progressive Field.
Mckenna Grace
Game on! The actress jumps up and down before throwing the first pitch at a baseball game in Arlington.
Jay Z & Beyonce
The superstar parents are spotted at a basketball game between the Los Angeles Clippers and the Utah Jazz in Los Angeles.
Jana Kramer
The country cutie is seen throwing the first pitch during a game between the Philadelphia Phillies and the Los Angeles Dodgers.
Vanessa Hudgens & Ashley Tisdale
The High School Musical alumni reunite for a basketball game between the Detroit Pistons and Los Angeles Lakers.
Mila Kunis
The actress reacts after throwing the first pitch before a game between the Chicago Cubs and the Pittsburgh Pirates.
Leslie Jones
The Saturday Night Live star is spotted cheering on her favorite team at the Milwaukee Bucks vs. New York Knicks game at Madison Square Garden.
Rebel Wilson & Snoop Dogg
You never know which Hollywood stars will meet up at a Los Angeles Rams football game.
Demi Lovato & Luke Rockhold
The "Cool for the Summer" singer and UFC Fighter show their support for the Los Angeles Rams at the Los Angeles Memorial Coliseum.
Bill Murray
Cubs win! The actor cheers on the Chicago Cubs as they win Game 7 of the World Series.
Vince Vaughn
Go Cubs go! The actor grabs the microphone to cheer on his favorite MLB in the World Series.
Jason Mraz
The "I'm Yours" singer shows his love for the San Diego Chargers in a T-shirt made possible by the NFL and Teespring.
Nick Jonas
Instead of sporing a Los Angeles Lakers jersey, the "Jealous" singer keeps it stylish with an ASOS sweatshirt at the Staples Center.
Gigi Hadid and Joe Jonas
The attractive couple cheers on the New York Rangers at the team's home opener game in addition to showing sweet PDA!
Christie Brinkley
The supermodel cheers on the New York Islanders as they face off against the Chicago Blackhawks at Barclays Center.
Bachelor in Paradise
Nick Viall, Kiptyn Locke, Josh Murray, Robert Graham, Dan Cox, Jade Roper, Whitney Bischoff, JJ Lane, Jared Halborn, Clare Crawley and Tanner Tolbert celebrate Thursday Night Football at Tacos & Tequila inside Morongo Casino Resort & Spa.
Ansel Elgort & Violetta Komyshan
The Fault in Our Stars cutie and his high school sweetheart are all smiles cheering on the New York Rangers.
Prince
The artist lords it over the commoners with what appears to be a scepter while watching Rafael Nadal conquer Dusan Lajovic at the 2014 French Open.
Katy Perry
The pop singer poses with Bailey, the Los Angeles Kings' official mascot. The reigning Stanley Cup Champions took on the Calgary Flames at the Staples Center in Los Angeles.
Reese Witherspoon & Jim Toth
The Hollywood couple can't hide their excitement as they watch the Toronto Raptors take on the Los Angeles Lakers at the Staples Center.