A CHANGE OF STRINGS!
Over time and as a result of use, each string loses tension and dynamism.
Keep your performance at a consistently high level by monitoring the stringing of your racket and getting it restrung in good time. Restringing is required after a loss of dynamic tension DT of 10 to a maximum of 20 percent.
Optimally adapt your racket and the stringing to your ability and power. Who wants to lose his match because the strings are getting softer and softer? We're sure you don't.