As with any sport, there are a few players who stand out among them all and have accelerated the sport to a whole new level. While there are many tennis players who have achieved many accomplishments, three modern day players are the face of tennis today: Roger Federer, Serena Williams, and Rafael Nadal. Federer and Nadal have dominated men's tennis for years, while Serena and her sister Venus have done the same for women's tennis.