Claim: Tennis is a two to four person sport played with racquets.
Evidence: Tennis is a racket sport that can be played individually against a single opponent -LRB- singles -RRB- or between two teams of two players each -LRB- doubles -RRB-.
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.