Nick Kyrgios, a 22-year-old Australian, is the only active player ever to defeat Roger Federer, Rafael Nadal, and Novak Djokovic in their first meetings; he has beaten Nadal and Djokovic twice, in fact, and came within a few points of a second victory over Federer earlier this year.
He has been called the most talented player since Roger Federer. But does he even want to win? Read more here.