THE OBJECT OF ALL RACKET SPORTS is to make shots the opponent cannot return. Games are played by two players (singles) or four players (doubles). Racket shape and size is tailored to each sport, but all rackets are constructed of wood, plastic, aluminum, or high-performance materials such as fiberglass and carbon graphite. Racket strings are usually synthetic, although natural gut is still used. Tennis is played on a court divided by a low net. Opposing players serve alternate games. At least six games must be won to gain a set, and two or sometimes three sets are needed to win a match.
Tennis courts may be concrete, grass, clay, or synthetic, each surface requiring a different style of play. Badminton is an indoor sport that is played with light, flexible rackets and a birdie on a court with a high net. Players can score points only on their serve. The first to reach 15 points (11 points for women’s singles) wins the game. Two games are needed to win a match. Squash and racketball are both played in enclosed courts. One player hits the ball against the front wall, and the other tries to return it before it bounces on the floor more than once. Squash rackets have smaller, rounder heads and stiffer frames than badminton rackets. In the United States, the game is played on a narrower court than an international court using a much harder ball. Squash games are played to 15 points (American) or 9 points (international). In racketball, players use a ball that is larger and bouncier than a squash ball. The racket is thick and sturdy, with a large head, short handle, and a thong that loops around the wrist. Points can be won only when serving, and the first player to reach 21 points wins.