Equipment

Racquets

The components of a tennis racquet include a handle, known as the grip, connected to a neck which joins a roughly elliptical frame that holds a matrix of tightly pulled strings. For the first 100 years of the modern game, racquets were of wood and of standard size, and strings were of animal gut. Laminated wood construction yielded more strength in racquets used through most of the 20th century until first metal and then composites of carbon graphite, ceramics, and lighter metals such as titanium were introduced. These stronger materials enabled the production of oversized rackets that yielded yet more power. Meanwhile technology led to the use of synthetic strings that match the feel of gut yet with added durability.

Under modern rules of tennis, the racquet must adhere to the following guidelines;[29]

The hitting area, composed of the strings, must be flat and generally uniform.

The frame of the hitting area may not be more than 29 inches in length and 12.5 inches in width.

The entire racquet must be of a fixed shape, size, weight, and weight distribution. There may not be any energy source built into the racquet.

The racquet must not provide any kind of communication, instruction or advice to the player during the match.

The rules regarding racquets have changed over time, as material and engineering advances have been made. For example, the maximum length of the frame had been 32 inches until 1997, when it was shortened to 29 inches.

Balls

Tennis balls are of hollow rubber with a felt coating. Traditionally white, the predominant color was gradually changed to Optic Yellow in the latter part of the 20th century to allow for improved visibility.