The 14-time major champ remains loyal to his alma mater, Stanford, but he's also stuck by his hapless Oakland Raiders.
Phil Mickelson
Lefty still supports his hometown team from the left coast, the San Diego Chargers.
Jordan Spieth
The Texan is a Cowboys/Mavericks/Rangers super fan. Through his friend, Cowboys QB Tony Romo, Spieth has enjoyed getting to know a bunch of the team's players. "Boy, it was a really good time getting to know those guys when I root so passionately for them on Sundays. It was kind of a slap-yourself moment that these guys want to meet me, too. It's an awesome experience."
Hunter Mahan
Mahan is such a big Cowboys fan that he even married one of the team's cheerleaders.
Rory McIlroy
McIlroy is a huge fan of Manchester United -- so much so that he got booed by Liverpool fans when he mentioned the team at his claret jug ceremony after winning the 2014 British Open at Hoylake.
Jason Dufner
Sure, many tour pros are fans of their alma maters, but how many of them have given locker-room pep talks to their school's football teams? Dufner is also a huge Cleveland Browns fan.
Rickie Fowler
Fowler is another tour pro whose support of his alma mater stands out. Here he is on the field before an Oklahoma State football game, and of course, he often wears Cowboys orange on Sundays.
Jason Day
Day grew up in Australia and turned pro instead of going to college, but living in Ohio, he's found a team to cheer for in the Buckeyes.
Michelle Wie
Like Tiger Woods, Michelle Wie is all about the Stanford Cardinal. She even carries around a "Nerd Nation" notebook when she plays.
Keegan Bradley
The Vermont native is a huge New England sports fan, in particular of the Patriots and Red Sox. His first public appearance after proposing to girlfriend Jillian Stacey? A trip to Fenway Park, of course.
Paula Creamer
Creamer's love of the San Francisco 49ers includes wearing personalized game-day gear.
Sergio Garcia
The Spaniard is a huge Real Madrid fan -- even if his fiance isn't.
Ian Poulter
The England export turned Orlando resident has grown quite fond of the NBA's Magic.
Luke Donald
The Northwestern grad and Chicago native adopted the hometown Cubs to root for, and has even led the Wrigley Field crowd in singing "Take Me Out to the Ball Game."
Fred Couples
The Seattle native is such a big Seahawks fan that he's been asked to represent all Seahawks fans by raising the 12th man banner before a home game.
