Tennis is a
sport usually played between two players (
singles) or between two teams of two players each (
doubles). Each player uses a
racket that is strung to strike a hollow rubber
ball covered with felt over a net into the opponent's
court. Tennis is an
Olympic sport and is played at all levels of society at all ages. The sport can be played by anyone who can hold a racket, including people
in wheelchairs.
The modern game of tennis originated in the
United Kingdom in the late 19th century as "
lawn tennis" which has close connections to various field/lawn games as well as to the ancient game of
real tennis. Up to then, "tennis" referred to the latter sport: for example, in
Disraeli's novel
Sybil (1845), Lord Eugene De Vere announces that he will "go down to
Hampton Court and play tennis. As it is the
Derby [classic horse race], nobody will be there".
[1] After its creation, lawn tennis spread throughout the upper-class English-speaking population before spreading around the world.
[2]
The rules of tennis have not changed much 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
tie-break 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 challenge the line (or chair) umpire's call of a point. Players have unlimited opportunity to challenge, but once three incorrect challenges are made in a set, they cannot challenge again until the next set. If the set goes to a tie break, players are given one additional opportunity to challenge the call. This electronic review, currently called
Hawk-Eye, is available at a limited number of high-level
ATP and
WTA tournaments.
Tennis is enjoyed by millions of recreational players and is also a hugely popular worldwide spectator sport, especially the four
Grand Slam tournaments (also referred to as the "Majors"): the
Australian Open played on hard courts, the
French Open played on red clay courts,
Wimbledon played on grass courts, and the
US Open played also on hard courts.