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Players are not allowed to touch the net with their racket or their body during play. Doing so is considered a fault and a point is awarded to the opponent.

The official weight of a badminton shuttlecock ranges from 4.74 to 5.50 grams. These specifications ensure consistent play.

A player can be at fault if they hit the shuttle before it passes over the net, deliberately distracts the opponent, invades the opponent's court, or is caught having the shuttle in their racket and then carrying it over the net or hitting it twice.

The size of a badminton court for singles is 17 feet (5.18 meters) wide and 44 feet (13.41 meters) long. The lines are 1.5 inches (40 millimeters) wide.

A double hit is considered a fault. It occurs when a player hits the shuttle twice in succession or if both players in doubles hit the shuttle in succession. The shuttle must be hit only once with one racket swing.

The shuttle should be hit below the waist, with a racket head that is pointing downward. The server must have both feet stationary on the ground within the service court until the service is delivered.

The official diameter of the shuttlecock's cork base is between 25 to 28 mm. This allows for proper flight stability and is part of the detailed regulations for equipment.

Players change ends after completing the first game, after the winning side scores 11 points in the third game, and if the match reaches a third game, they change ends again once a side reaches 11 points.

A legal badminton racket must meet the dimensions set by the Badminton World Federation, with a frame not exceeding 680mm in length and 230mm in width. The stringed area must not exceed 280mm in length and 220mm in width.

The minimum ceiling height for a badminton court is 9 meters. This is to provide sufficient high clear space for play without obstruction.

A service court error happens when a player serves or receives outside the boundaries of the correct service court. This results in a fault and the opponent wins the rally.

The principle of continuous play states that the game must flow without interruption, caused by players taking excessive time during serves, rest, or delays between rallies.

The shuttle is not in play when it strikes the net and falls toward the striker's side or when a 'fault' or 'let' has been called. Once the shuttle has landed outside the boundaries of the court, it is also considered not in play.

An official shuttlecock has 16 feathers fixed in the base. Each feather is 62 to 70 mm in length and 11 to 11.5 mm in width, coming from the left wing of a goose.

A badminton match commences with a coin toss. The winner of the toss may choose to serve or receive first, or to start on a particular side of the court. The loser of the toss then makes the remaining choice.

The height of a badminton net at the posts is 5 feet 1 inch (1.55 meters). The net is slightly higher at the posts than at the center.

Players are required to have a proper sports attire, which typically includes a shirt, shorts or a skirt, and sports shoes. The uniform needs to be acceptable for athletic competition and non-offensive.

A game is won by the first player or team to reach 21 points with a minimum lead of 2 points. In the case of a 20-20 tie, the game continues until a 2-point lead is achieved or until 30 points is reached.

Shuttlecocks are tested for speed by hitting a shuttle from the back boundary line to the opposite side; it should land within 530mm to 990mm of the other back boundary line to be considered suitable for play.

The server and receiver must stand within diagonally opposite service courts without touching the boundary lines. Both players must remain stationary until the serve is made.

The badminton racket frame cannot exceed 680mm in overall length and 230mm in overall width. The hitting area must not exceed 280mm in length and 220mm in width.

A fault during service occurs if the shuttle is not hit below the waist, the racket head is not pointing downward, the shuttle does not fall into the proper service court, the server feints or delays service, among other service faults.

If a player serves before the receiver is ready, the serve is considered a fault, provided the receiver has not made an attempt to hit the shuttle. A let should be called if there was no attempt to return the serve.

A let is decided if the shuttlecock gets caught in the net and remains suspended on top or after passing over the net, gets caught in the net and remains suspended on top or, after passing over the net, is blown back to the striker's side.

Players must conduct themselves in a fair and respectful manner. This includes not deliberately distracting opponents, not showing disrespect to officials or opponents, adhering to decisions without argument, and maintaining the decorum of the sport.

A 'let' is called when an unforeseen or accidental situation occurs, such as the shuttle getting stuck in the net or if players were not ready. No point is scored and the service is replayed.

Yes, an underarm serve is legal in badminton as long as the shuttle is struck below the waist and the racket's head is pointing downward at the moment of impact.

The net height in the center of the court should be 5 feet (1.524 meters). The net is pulled tight and even with no gaps.