Osaka is front and center in ESPN's World Fame 100 issue

Naomi Osaka's fame and popularity continues to grow, so much so that she is gracing the cover of ESPN magazine.

The Japanese 21-year-old is the covergirl for the fourth annual World Fame 100 issue, a list that ranks how famous athletes are based on social media followers, endorsement dollars and other figures.

The rankings have not yet been released, but in 2018, Roger Federer was No. 5 on the list and Rafael Nadal was No. 8. Serena Williams was the top-ranked woman at No. 12 and it will be interesting to see if Osaka can surpass that ranking. Novak Djokovic placed 14th, while Maria Sharapova ranked No. 21 and Venus Williams came in at No. 48.

Osaka is featured in an in-depth story with *The* *Undefeated*, in collaboration with ESPN Magazine. She addresses everything from her rise in fame, her Grand Slam wins, Serena Williams, and her ethnicity.

The world No. 1 began her Indian Wells title defense on Saturday against Kristina Mladenovic, who happens to be the last person she played, and lost to, in Dubai. But this time, she flipped the script, winning 6-3, 6-4. She's now into the round of 16 after following that up with a straight-sets win over Danielle Collins.