I have seen on social media a guy who has a contraption to test grip strength; how much force they can squeeze. Has anyone tried this? I’m curious to see if we as tennis players have good grip strength compared to your average Joe or Jane?
Let's be clear about grip strength in playing tennis.
A firm fingertip racket grip helps on higher volleys and half volleys at the service line and further back.
But on serve and full-swinging baseline shots, a looser grip is required to prevent a tightening all the way up the arm, from the wrist to the shoulder.
A looser grip allows racket acceleration. A tighter grip slows racket speed at ball contact.
Foremost, every joint works independently, yet every joint, from the brain to the eyes to the neck to the arm to the waist to the knees to the ankles to the toes, works in a coordination on hitting a tennis ball.
That might explain why so many people try to play tennis on their own and then after a time or two quit.