Strings (tennis) be more durable than many other types of strings due to its outstanding tension retention. This may help to offset the high initial cost. The use of a dense string pattern also generally improves the longevity of natural gut. Natural gut is produced by drying fibers extracted from a part of the cow intestine called the serous membrane, or serosa, which contains collagen designed to withstand the stretching and contraction of the intestine. It is this elasticity that makes the fibers useful for tennis string. Sheep intestines have also been used for racquet strings in the past. The first natural
Rackets (sport) Rackets (sport) Rackets or racquets is an indoor racket sport played in the United Kingdom, Ireland, United States, and Canada. The sport is infrequently called "hard rackets", possibly to distinguish it from the related sport of squash (formerly called "squash rackets"). Historians generally assert that rackets began as an 18th-century pastime in London's King's Bench and Fleet debtors prisons. The prisoners modified the game of fives by using tennis rackets to speed up the action. They played against the prison wall, sometimes at a corner to add a sidewall to the game. Rackets then became popular outside the prison, played