Badminton is a racquet sport played by either two opposing players (singles) or two opposing pairs (doubles), who take positions on opposite equal halves of a rectangular area called court equally divided by a net. Players make a score by striking a shuttlecock with their racquet so that it passes over the net and lands in their opponents' half of the court and each side can strike the shuttlecock only once before it passes over the net. A rally is referred to as the single playing time which lasts until the shuttlecock has struck the floor i.e. a rally is the duration for which the opponents keep playing without fault. A rally ends once the shuttlecock has struck the ground- fallen to ground, or if a fault has been called by either the umpire or, in their absence, the offending player, at any time during that rally. Because shuttlecock flight is affected majorly by speed and direction of wind, competitive badminton is played indoors. Badminton is also played outdoors as a casual recreational activity. Since 1992, badminton has been an Olympic sport with five competition/events: men's and women's singles, men's and women's doubles, and mixed doubles, in which each pair consists of a man and a woman.