Strings (tennis)
The material used in tennis string can significantly affect a player's performance, and even health. Several materials are used to make tennis strings. They vary in terms of elasticity, durability, rebound efficiency, tension holding capability, and manufacturing cost, among other considerations.
Turbo Tennis
Unlike regular tennis, games are set to a 30-minute time limit with a klaxon on the fifteenth minute to signify a change of ends from the next game onwards. If games are level after 30 minutes the winner is decided by a sudden death point, but there have been some changes and you have to win 2 out of 3 sudden death points to win the match. Other main differences include a 15-second maximum time limit for serves which, if exceeded, results in the player losing the point automatically; lets on serves are also played.