Straight arm or the bent arm forehand - which tennis forehand technique is better? If you play with a straight arm, it can be difficult to adjust to different ball bounces.
This is because to adjust your shot, you have to move your whole arm from the shoulder.
Moving the whole arm is a slower and less precise movement compared to adjusting with your forearm in case of the bent arm forehand.
This is because your adjustment comes from the elbow joint, and you only need to move your forearm a little bit up or down to adjust the shot.
With a bent arm, you have a shorter lever to control, making it faster and easier to make adjustments.