Apart from the obvious reason, which would be a broken string, you should also check for elements of wearing on your strings. 

Strings break down over time due to overuse and exposure to the elements, which gives it that “dead” feeling…meaning a loss in playability.

Does weather affect your strings? The short answer is YES. Strings will be softer and livelier in warmer climates and stiffer in cooler climates.

Strings instantly lose their tension once played with, so the more you play, the more quickly your strings will lose tension or break. Your strings will also lose tension if they are not played with, known as static tension loss.

After repeated hitting, strings are susceptible to notching. Notching refers to an incision on the string that causes it to become thinner, and that will ultimately lead to the string breaking. When you have these notches on the string, it does not stretch or snap back.

As a minimum, we recommend restringing your racket at least every 6 months for those recreational players. If you’re a more active player, playing a few times per week, we recommend restringing regularly by assessing your game to check if your strings are still being effective.

Your strings are the ‘heart’ of your racket and are vital to its performance!