Tennis is a racket sport that can be played individually against a single opponent (singles) or between two teams of two players each (doubles).
The modern game of tennis originated in Birmingham, England, in the late 19th century as "lawn tennis".
Key elements of tennis include:
1. Played on a rectangular court with a net in the middle
2. Players use rackets to hit a hollow rubber ball covered with felt
3. Scoring system includes points, games, and sets
4. Major tournaments include Wimbledon, US Open, French Open and Australian Open