Squash is a racket and ball sport played by two players in a four-walled court with a small, hollow rubber ball. The players alternate in striking the ball with their racquets onto the playable surfaces of the four walls of the court. The objective of the game is to hit the ball in such a way that the opponent is not able to play a valid return. There are about 20 million people who play squash regularly world-wide in over 185 countries.[1] The governing body of Squash, the World Squash Federation (WSF), is recognized by the International Olympic Committee (IOC), but the sport is not part of the Olympic Games, despite a number of applications. Supporters continue to lobby for its incorporation in a future Olympic program.

the racket

Squash rackets have maximum dimensions of 686 mm (27.0 in) long and 215 mm (8.5 in) wide, with a maximum strung area of 500 square centimeters (77.5 sq in). The permitted maximum weight is 255 grams (9.0 oz), but most have a weight between 90 and 150 grams

Ball

Squash balls are between 39.5 and 40.5 mm in diameter, and weigh 23 to 25 grams.[6] They are made with two pieces of rubber compound, glued together to form a hollow sphere and buffed to a matte finish. Different balls are provided for varying temperature and atmospheric conditions and standards of play: more experienced players use slow balls that have less bounce than those used by less experienced players (slower balls tend to "die" in court corners, rather than "standing up" to allow easier shots). Squash balls must be hit dozens of times to warm them up at the beginning of a session; cold squash balls have very little bounce. Small colored dots on the ball indicate its dynamic level (bounciness). The "double-yellow dot" ball, introduced in 2000, is the competition standard, replacing the earlier "yellow-dot" ball. There is also an "orange dot" ball for use at high altitudes. The recognized colors are:

court

The squash court is a playing surface surrounded by four walls. The court surface contains a front line separating the front and back of the court and a half court line, separating the left and right sides of the back portion of the court, creating three 'boxes': the front half, the back left quarter and the back right quarter. Both the back two boxes contain smaller service boxes. The court's four walls are divided into a front wall, two side walls, and a back wall. An 'out line' runs along the top of the front wall, descending along the side walls to the back wall. The bottom line of the front wall marks the top of the 'tin', a half meter-high metal area. The middle line of the front wall is the service line. The dimensions of the court are

Edwin Moses is the most successful athlete in the event, having won two gold and one bronze medal. Glenn Davis, Angelo Taylor and Felix Sanchez have also won two Olympic 400 m hurdles titles. Morgan Taylor is the only other athlete beside Moses that has won three medals in the event. Deon Hemmings is the most successful woman, with her 1996 gold and 4000 silver medals, and is the only female athlete to win multiple medals. It is relatively common for 400 m hurdles athletes to also be part of their nation's team for the 4×400 metres relay at the Olympics.

service

The players spin a racket to decide who serves first. This player starts the first rally by electing to serve from either the left or right service box. For a legal serve, one of the server's feet must be in the service box, not touching any part of the service box lines, as the player strikes the ball. After being struck by the racket, the ball must strike the front wall above the service line and below the out line and land in the opposite back quarter court. The receiving player can choose to volley a serve after it has hit the front wall. If the server wins the point, the two players switch sides for the following point. If the server loses the point, the opponent then serves, and can serve from either box.