Stiff rackets bend less, depleting energy from the ball.
Flexible Rackets: Due to their flexibility, provides more comfort (due to less shock) and control (because of less power). It loses more energy due to more racket deflection, transferring less energy to the ball. Best suited for athletes with faster swings and players who are capable of generating their own power.
Stiff Rackets: They transfer more energy to the ball. Due to their stiffness, they vibrate less and lose less energy due to less racket deflection. Ideal for athletes with shorter and slower swings, who want their racket to generate more power for them.