Pros jumping while performing forehand flick

I noticed that some of the pros do a mini jump whenever they are flicking with the forehand. It's like they contact the ball in mid-jump. Why do they need to jump before they flick? And it looks very risky because they could lose their balance after the flick.

Hi Jasper,

The are moving quickly to the ball and jumping while doing so.  Their movement is actually very balanced and you will notice they land in a balanced position and are then able to jump back quickly to the next position they require because of the energy that is going through their legs on landing.