Serena Williams (born September 26, 1981) is one of the most renowned and established names in the world tennis circle. Immensely talented and skilled player, she throws away a power packed performance every time she is in the tennis court and leaves her opponents spell bounded. In her career spanning two and a half decades, she first gained the world no 1 ranking in 2002 and later regained the same on five more occasions. In her career so far, she has won 39 Grand Slam titles: 23 in singles, 14 in women's doubles, and 2 in mixed doubles. In 2002-03 and 2014-15, she achieved the rare feat of holding all the four Grand Slam titles simultaneously. What gives her the edge over other players of her generation is her fastest power-packed serve, followed by forceful groundstrokes from both her forehand and backhand swings and aggressive high playing style. She is also known for her mental toughness and her ability to strike back when the chips are down. The Williams sisters have changed the face of women's tennis with their power play and athleticism. Serena Williams is considered among all-time great women tennis players.