Serena Williams is no stranger to overcoming obstacles. From growing up in a tough neighborhood to combatting racism to weathering severe health issues, there is no challenge she can't defeat, no hurdle that will get in the way of her unwavering desire to be the best tennis player in the world. As a little girl, Serena spent years training at her local court with her father and older sister, Venus, dreaming of one day winning Grand Slam titles and earning the number one ranking in the world. After more than twenty years of dominating the world of tennis, there's no doubt that Serena has made her dreams come true.