As a tennis player, you should change your racket every year to take advantage of the new technologies used in the latest tennis rackets that are designed to improve your game. With each new generation of rackets, there are usually innovation in design and materials that can help you increase your power and accuracy. You may not notice much difference with the first few swings of a new racket, but over time, it will make a big difference in your performance. So don't be afraid to change up your racket every year!