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 play 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.