Introduction

Tennis is a game played between two players (singles) or between two teams of two players (doubles). Players use a stringed racquet to strike a hollow rubber ball covered with felt (most of the time yellow, but can be any color or even two-tone) over a net into the opponent's court.
Originating in Europe in the late 19th century as "lawn tennis", with its roots going back to the ancient game of real tennis, tennis spread first throughout the English-speaking world, particularly among the upper classes. Tennis is now once again an Olympic sport and is played at all levels of society, by all ages, and in many countries around the world.

Except for the adoption of the tie-breaker in the 1970s, its rules have remained remarkably unchanged since the 1890s. A recent addition to tennis has been the adoption of "instant replay" technology coupled with a point challenge system which allows a player to challenge the official call of a point.

Along with its millions of players, millions of people world-wide follow tennis as a spectator sport, especially the four Grand Slam tournaments: Australian Open, French Open, Wimbledon, and the U.S. Open. The growth of tennis in Eastern Europe and the Far East has been especially notable in recent years.

History

Tennis as the modern sport can be dated to two separate roots. Between 1859 and 1865, Major Harry Gem and his friend Augurio Perera developed a game that combined elements of rackets and Spanish ball game pelota, which they played on Perera's croquet lawn in Birmingham, England. In 1872, along with two local doctors, they founded the world's first tennis club in Leamington Spa. The Courier of 23 July 1884 recorded one of the first tennis tournaments, held in the grounds of Shrubland Hall.

In December 1873, Major Walter Clopton Wingfield designed a similar game — which he called sphairistike (Greek σφάίρίστική, skill at playing at ball), and was soon known simply as "sticky" — for the amusement of his guests at a garden party on his estate of Nantclwyd, in Llanelidan, Wales. He based the game on the older sport of indoor tennis or real tennis. According to most tennis historians, modern tennis terminology also derives from this period, as Wingfield borrowed both the name and much of the French vocabulary of real tennis and applied them to his new game.

The first championships at Wimbledon, in London were played in 1877. On May 21, 1881, the United States National Lawn Tennis Association (now the United States Tennis Association) was formed to standardize the rules and organize competitions. The U.S. National Men's Singles Championship, now the U.S. Open, was first held in 1881 at Newport, Rhode Island. The U.S. National Women's Singles Championships were first held in 1887. Tennis was also popular in France, where the French Open dates to 1891. Thus, Wimbledon, the U.S. Open, the French Open, and the Australian Open (dating to 1905) became and have remained the most prestigious events in tennis. Together these four events are called the Grand Slam (a term borrowed from bridge).The comprehensive International Lawn Tennis Federation rules promulgated in 1924 have remained remarkably stable in the ensuing eighty years, the one major change being the addition of the tie-breaker system designed by James Van Alen.The Davis Cup, an annual competition between national teams, dates to 1900.
In 1926, promoter C.C. Pyle established the first professional tennis tour with a group of American and French tennis players playing exhibition matches to paying audiences. The most notable of these early professionals were the American Vinnie Richards and the Frenchwoman Suzanne Lenglen. Once a player turned pro he or she could not compete in the major (amateur) tournaments.

In 1968, commercial pressures and rumors of some amateurs taking money under the table led to the abandonment of this distinction, inaugurating the open era, in which all players could compete in all tournaments, and top players were able to make their living from tennis. With the beginning of the open era, the establishment of an international professional tennis circuit, and revenues from the sale of television rights, tennis has spread all over the world and has lost its upper-class English-speaking image.

In 1954, James Van Alen founded the International Tennis Hall of Fame, a non-profit museum in Newport, Rhode Island. The building contains a large collection of tennis memorabilia as well as a hall of fame honoring prominent members and tennis players from all over the world. Each year, a grass-court tournament is hosted on its grounds, as well as an induction ceremony honoring new Hall of Fame members.

Match Play

A tennis match is intended to be continuous. Stamina is a relevant factor, so arbitrary delays are not permitted. In most cases, service is required to occur no more than 20 (ITF events) or 25 (ATP and WTA events) seconds after the end of the previous point. This is increased to 90 seconds when the players change ends (after every odd-numbered games), and a 120 second break is permitted between sets. Other than this, breaks are permitted only when forced by events beyond the players' control, such as rain, damaged footwear, damaged racquet, or the need to retrieve an errant ball. Should a player be determined to be stalling repeatedly, the chair umpire may initially give a warning followed by subsequent penalties of "point," "game," and default of the match for the player who is consistently taking longer than the allowed time limit.

In the event of a rain delay or other such proponent, the match must be resumed at a later time. On junior professional circuits the matches are to be resumed at the score which was at the time of the delay. However, as per new revisions beginning with the 2006 Australian Open, the ATP and WTA govern different regulations regarding delays; in the event of a rain delay, the match will resume while only the end of the previously completed set before the delay is official.
Balls wear out quickly in serious play and, therefore, in ATP and WTA tournaments, they are changed after every nine games with the first change occurring after only seven games, because the first set of balls is also used for the pre-match warm-up. However, in ITF serious tournaments like Fed Cup the balls are changed in a 9-11 . Continuity of the balls' condition is considered part of the game, so if a re-warm-up is required after an extended break in play (usually due to rain), then the re-warm-up is done using a separate set of balls, and use of the match balls is resumed only when play resumes.

It has recently been proposed to allow coaching on court during a match on a limited basis. Also, technological review of official calls made its debut in a major tournament at the 2006 U.S. Open.

The Greatest Male Single Players

A frequent topic of discussion among tennis fans and commentators is who was the greatest male singles player of all time. No consensus has ever existed, however. By a large margin, an Associated Press poll in 1950 named Bill Tilden as the greatest player of the first half of the 20th century. From 1920-1930, Tilden won singles titles at Wimbledon three times and the U.S. Championships seven times. In 1938, however, Donald Budge became the first person to win all four Grand Slam singles titles during the same calendar year and won six consecutive Grand Slam singles titles in 1937 and 1938. Tilden called Budge "the finest player 365 days a year that ever lived. And in his 1979 autobiography, Jack Kramer said that, based on consistent play, Budge was the greatest player ever. Some observers, however, also felt that Kramer deserved consideration for the title. Kramer was among the few who dominated amateur and professional tennis during the late 1940s and early 1950s. Tony Trabert has said that of the players he saw before the start of the open era, Kramer was the best male champion.

By the latter half of the 1950s and 1960s, Budge and others had added Pancho Gonzales and Lew Hoad to the list of contenders. Budge reportedly believed that Gonzales was the greatest player ever.[28] Gonzales said about Hoad, "When Lew's game was at its peak nobody could touch him. ... I think his game was the best game ever. Better than mine. He was capable of making more shots than anybody. His two volleys were great. His overhead was enormous. He had the most natural tennis mind with the most natural tennis physique."

During the open era, first Rod Laver and then more recently Björn Borg and Pete Sampras were regarded by many of their contemporaries as among the greatest ever. Cliff Drysdale has said that Laver is the greatest player ever. Mats Wilander said, "The greatest player ever is not necessarily the player who has won the most. I would say that Björn Borg is the greatest player ever because he won Wimbledon five times in a row. And out of those five times, he won the French Open all of those five years, plus another year. Laver has said that Sampras is "equal to anyone who has ever played the game. John McEnroe has said that either Laver or Sampras is the greatest player ever. Roger Federer is now considered by many observers to have the most "complete" game in modern tennis, with the potential to challenge the achievements of these past greats. Many experts of tennis, former tennis players and some of his own tennis peers, believe Federer may become the greatest player in the history of the game. The tennis historian Raymond Lee did a statistical analysis account of the question, counting tournament wins totals and percentages of career match wins and wins in a 5 year period. His alltime list ranks Laver ahead of Borg and Tilden (tie), Federer, Gonzales, Rosewall, Budge, Lendl, Connors, Sampras in the top ten.