
Due to the tension present on the strings, elasticity and tension begins to decrease the moment they are installed in a racquet. "Dead strings", or strings which have lost their tension, cut down on the performance of a head tennis rackets racquet. Dead strings may also hamper a tennis player's ability to generate power and pace, and may even make his arm sore.
The frequency of restringing depends on the player and the racquet, but there are a few recommended intervals. One is to restring the wilson tennis racket racquet as many times in a year as the player uses it in a week; e.g., if the racquet is used three times per week, it should be restrung three times per year. Another guideline is to restring after every 40 hours of play; if the racquet is used three times per week and three hours per session, it should be restrung approximately every five weeks. If the player has access to a tennis string tension meter (or access to a pro shop equipped with one), he may restring his racquet after he measures a loss of 25% or more of stringbed stiffness. However, many players who hit the babolat tennis racquet ball hard to break the strings simply restring rackets whenever the strings break.
A "ping" should always be heard when the racquet face is struck against the palm of the hand. If not, or if there is a "thud" sound instead, the racquet needs to be restrung.




















