Arm Speed drill / test

Multiple World Record Holder and 2 time Olympian Roald Bradstock gets a Life time best aged 56 years 7 months 2 weeks old.
The arm speed drill / test requires hitting a racket ball as hard as possible against a wall 100 times. The goal is to get the ball to cover more than 2 lengths of the court ( 2 wall bounces) after being hit before the ball hits the ground.
Today that happened 68 times out of a hundred - 10% better then his (my) previous Record!!!!!

[Polarcupcheck]

Try that with a continental grip. A shake hands grip.