QUIZ: We bet you won’t be able to guess who’s the most famous athlete every time

Who is more famous?

Ronda or Rory? Serena or Sharapova? ESPN released their second annual World Fame 100 on Wednesday and it made for interesting reading. According to the site, the director of analytics at ESPN devised a formula that combines endorsements, social media following and internet search popularity. There's some interesting rankings in but have a go at our quiz to see who you think is more famous.