American tennis player Serena Jameka Williams was born on September 26, 1981, in Saginaw, Michigan. The youngest of Richard and Oracene Williams’s five daughters, Serena Williams, along with her sister Venus, would grow up to become one of the sport’s great champions.Serena’s father—a former sharecropper from Louisiana determined to see his two youngest girls succeed—used what he’d gleaned from tennis books and videos to instruct Serena and Venus on how to play the game. At the age of 3, practicing on a court not far from the family’s new Compton, California, home, Serena withstood the rigors of daily two-hour practices from her father.In 1995, Serena turned pro. Two years later, she was already No. 99 in the world rankings—up from No. 304 just 12 months before. A year later, she graduated high school, and almost immediately inked a $12 million shoe deal with Puma. In 1999, she beat out her sister in their race to the family’s first Grand Slam win, when she captured the U.S. Open title.Williams clinched her third straight and sixth overall U.S. Open singles title in 2014 by defeating her good friend Caroline Wozniacki. Her winning ways carried into the new year, as she beat Sharapova to claim the 2015 Australian Open championship. At the French Open in June, Williams managed to overcome illness to win the tournament for the third time and claim her 20th Grand Slam singles title, good for third place all-time.