1) A tennis court is defined by international regulations, with singles courts measuring 23.77m long and 8.23m wide for singles or 10.97m wide for doubles. The net is 0.91m high in the center. 2) A tennis match involves one or two players per side, rackets and balls. Courts can be grass, clay, hard or carpet surfaces. 3) Scoring involves points at 15, 30 and 40, with a game won by reaching 4 points and winning by 2 clear points if the game reaches deuce at 40-40. Sets are won by reaching 6 games and winning by 2 games.