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My favorite tennis player is Simona Halep. Simona Halep is a Romanian professional tennis player.She has been ranked world  No. 1 in singles twice between 2017 and 2019. Halep has won two Grand Slam singles titles: the 2018 French Open and the 2019 Wimbledon  Championship. source:https://en.wikipedia.org/wiki/_Halep

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The most famous tennis players are Rafael Nadal , Arthur Ashe, Serena Williams, John McEnroe, Martina Navratilova, Roger Federer, Martina Hingis, Marat Safin, Marat Safin, Maria Sharapova source:https://www.worldlistmania.com/10-most-famous-tennis-players-world/

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The most famous Grand Slams are  Wimbledon, Australian Open, French Open, US Open. source:https://en.wikipedia.org/wiki/Tennis#Grand_Slam_tournaments

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Tennis is a racket sport that can be played singles or doubles.Tennis is an Olympic sport and is played at all levels of society and at all ages.The rules of modern tennis have changed little since the 1890. Tennis is played by millions of recreational players and is also a popular worldwide spectator sport. source:https://en.wikipedia.org/wiki/Tennis

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A ball must land within bounds for play to continue; if a player hits the ball outside of bounds, this results in the loss of the point for them.

Players can not hit the ball twice.

Players must wait until the ball passes the net before they can return it.

A player that does not return a live ball before it bounces twice loses the point.

If the ball hits or touches the players, that counts as a penalty.

Any ball that bounces on the lines of boundary are considered good..

source:http://protennistips.net/tennis-rules/