Strings (tennis)
In tennis, the strings are the part of a tennis racquet which make contact with the ball. The strings form a woven network inside the head (or "hoop") of the racquet. Strings have been made with a variety of materials and possess varying properties that have been measured, such as dynamic stiffness, tension retention, thickness (gauge), string texture (shape of the string), and rebound efficiency.
Real tennis
The rules and scoring are similar to those of lawn tennis, which derives from real tennis, but are more complex. Although in both sports game scoring is by fifteens (with the exception of 40, which was shortened from forty-five), in real tennis, six games wins a set, without the need for a two-game buffer as in lawn tennis although some tournaments play up to nine games per set. A match is typically best of three sets, except for the major open tournaments, in which matches are best of five sets for men, and the best of three sets for women.