Serena Williams

She is the younger sister of former World No. 1 professional female tennis player Venus Williams; the sisters have played each other in 20 professional matches dating back to 1998, with matches played between them tied at 10–10 as of May 2009.

They are the only women during the open era to have played each other in four consecutive Grand Slam singles finals.

Williams is primarily a baseline player. Her game is built around taking immediate control of rallies with a powerful and consistent serve (considered by some to be the best in the women's game),[11] return of serve, and forceful groundstrokes from both her forehand and backhand swings. Her serve is technically very sound and has been hit as hard as 127 mph (203 kph), third fastest all-time.
Williams' solid volleys—especially her drive volleys and powerful overheads give her advantages over the net. She produces good drop volleys, a shot that not many players use.

Although Williams' forehand is among the most powerful shots in the women's game, her backhand is considered to be one of the best,[weasel words] if not the best, on the Women's Tennis Association (WTA) tour. Williams can hit a winning backhand shot in any position or place on the court down the line or cross court, even when on the defensive or otherwise under pressure. Williams strikes her backhand groundstroke using an open stance, and uses the same open stance for her forehand.

Williams' aggressive style of play results in a relatively high number of unforced errors. This 'high risk' style is balanced in part by her serve, which is generally more consistently explosive.[13]

Although many think of Williams as only an offensive player, she also plays a strong defensive game.[14] She is quick around the court, and her core strength enables her to hit the ball efficiently from difficult positions. Williams has more variety in her game than the typical offensive baseline player. Although she normally dictates play from the baseline with heavy strokes, she occasionally slices her backhand or hits heavy topspin groundstrokes or drop shots to change the pace of the ball.

Date of birth : September 26, 1981 (1981-09-26) (age 27)
Place of birth : Saginaw, Michigan, U.S.
Height : 5 ft 9 in (1.75 m)[1]
Weight : 150 lb (68 kg)[1]
Turned pro : 1995
Plays : Right; Two-handed backhand

Source: Wikipedia.org