Rafael Nadal
“Vamos!” The exclamatory cheer immediately makes you think of one man in the tennis world—Rafael Nadal. The left-handed headache to Roger Federer, Nadal has not only dominated on the tennis courts—winning 19 Grand Slam titles—over the past two decades, but he’s also become an international star. Rafa’s clout within tennis is visible in his social media rankings—ahead of Federer with close to 40 million followers—while the amount of younger tennis players wearing his signature “Bull Logo” Nike gear while swinging his Babolat racquet demonstrates his absolute marketability. Like Federer, Nadal also uses his social media reach for more than a few remarkable humanitarian efforts, too.