Tennis
is a racket sport that is played either 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 manoeuvre 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 validly will not gain a point, while the
opposite player will.
