Clint Dempsey finished his international career as the United States' joint-leading scorer of all time. Both Dempsey and Landon Donovan reached 57 goals for the USMNT.

Sydney Leroux is a proven, talented goal scorer for both club and country. The Orlando Pride and former USWNT star is feared by defenders and revered by teammates. But more than that, she's got one of the most fun Instagram pages in the world — primarily because of all the amazing costumes she's worn over the years, from video game characters to '90s icons.

When not remodeled into a statue, Cristiano Ronaldo is one of the most beautiful footballers in the world. So it's little surprise many of the most beautiful women in the world have made the claim to fame of being a Cristiano Ronaldo girlfriend.

Ronaldo has never been a stranger to tabloids reporting on his love life, from rumored encounters with Kim Kardashian and Paris Hilton to confirmed relationships with models, swimsuit models and lingerie models.

More than any other sporting event, the men's World Cup captures the imagination through unforgettable moments: goals that make you leap out of your seat in celebration, anger or confusion. The best World Cup goals are those you remember years later, if not decades.

No event defines an athlete's career quite like the World Cup. It's why people still look at Lionel Messi like he's got something to prove (he doesn't) and why the name Chris Wondolowski still brings a tear to the eye of many Americans. The 2014 World Cup made Mario Gotze an international icon, turned James Rodriguez into the hero of Colombians everywhere and earned DeAndre Yedlin a Spurs contract.

Any football fan knows what a match between Real Madrid and Barcelona means. It's a fixture so important that it's been dubbed El Clasico by spectators in Spain and around the world. Controversy always surrounds this historic Spanish rivalry, especially when players decide to switch their allegiances.

Surprisingly, there have been a good number of players that have made the switch from Barcelona to Real Madrid and vice versa. Now, with El Clasico looming, we look back to see the 10 best players to play for both Barcelona and Real Madrid.