Twenty-two-year-old Australian tennis player Nick Kyrgios is ranked 20th in the world and has beat tennis greats Roger Federer, Rafael Nadal, and Novak Djokovic on the court. He’s also flagrantly tried to lose matches on purpose out of frustration, argued with umpires, and berated ball kids. The tennis world is waiting for Kyrgios to mature, but his heart might not be in the game.