Interactive Forum April 2025: Jakub Mensik Serve

[jimlosaltos]

The Mensik slo-mo was blacked and could not open- any suggestions?

I had that problem at first. Then the video appeared the next day without any apparent cause.
I know it's not very helpful. But perhaps clear your cache and reopen? If you're in Safari on the desktop, clearing the cache requires going to / enabling "Develop" on the menu bar.

[giancarlo]

Well remembered. Yes, when John was perhaps the first to report RPMs for players serves and forehands from match play, before Hawkeye, he would count logo revolutions in his slow motion video. If you know how many frames it takes for a ball revolution, the frame rate gives you the spin. Very tedious work. I've done it. Please never make me do it again

P.S. Anecdote from when John was the only source for spin info. Andy Murray asked him if he was up with Rafa and Fed. John had to break the bad news to Sir Andy "No, about 200 RPMs lower".

You are absolutely correct!