Tennis Court Dimensions:

Singles: 27 ft (8.23 m) wide by 78 ft (23.77 m) long.

Doubles: 36 ft (10.97 m) wide by 78 ft (23.77 m) long.

Tennis Balls:
A tennis ball must be covered in a grippy velvet like material that can come in any number of colors but is usually a yellowish-green. The ball must weigh between 56 grams and 59.4 grams. A legal new tennis ball bounces 249 cm on a 4 foot drop.

Tennis Racquets:
A variety of rackets can be used to play tennis; they can vary in length, weight, and material but all must conform to certain specifics. A legal tennis racket must be built of a circular metal frame containing one layer interweaved bits of plastic strings. The effect that the racket has on the ball must be identical on both sides of the racket (no double layering of the strings). The racket cannot exceed 73 cm in length and 31 cm in width.