As Kimi Antonelli makes history as Formula One's youngest champion, look back at four other precocious talents—Pele, Steffi Graf, Mikaela Shiffrin, and Sachin Tendulkar—who conquered their sports at a remarkably young age.
Germany's Alexander Zverev has clinched the year-end ATP world number one ranking for the first time in his career, capping off a remarkable season that included Grand Slam victories in Paris and New York.
