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Tennis is a racket sport that can be played individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to maneuver the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball will not gain a point, while the opposite player will.

Men's Tennis ATP Rankings 2019:
1.Rafael Nadal(Spain)
2.Novak Djokovic(Serbia)
3.Rafael Nadal(switzerland)

Men´s tennis rankings titles 2019:
1.Roger Federer: 103
2.Rafael Nadal: 84
3.Novak Djokovic: 76

The rules of modern tennis have changed little since the 1890s. Two exceptions are that from 1908 to 1961 the server had to keep one foot on the ground at all times, and the adoption of the tiebreak in the 1970s. A recent addition to professional tennis has been the adoption of electronic review technology coupled with a point-challenge system, which allows a player to contest the line call of a point, a system known as Hawk-Eye.
Tennis is played by millions of recreational players and is also a popular worldwide spectator sport. The four Grand Slam tournaments (also referred to as the Majors) are especially popular: the Australian Open played on hard courts, the French Open played on red clay courts, Wimbledon played on grass courts, and the US Open also played on hard courts.

My name is Juan José López i am 12 years old i was born in december 22 of 2007 in imbanaco.I study in the bennett school i have two sisters.I am in 5 grade of primary i live with my mother and my sister in the normandia neighborhood in cali.

My name is Samuel Herrera i am 11 years old I born in the hospital of imbanaco in 2008 of may 12 I study in bennett school i have 1 sister. I am in 5 grade and i live in Cali with my father and grandmother.