There's no need to attack. If you had read a few posts down, you would have come across this:See this guy gets it. Thanks man, have no idea what McLovin has issues with. Maybe he's not skilled enough to do these things or maybe he doesn't wrap his grips the same way each time, etc.
But, to answer your attack, I do not believe 'skill' has anything to do w/ feeling the difference between 'up' and 'down' of the racquet. After posting the above, I went out on the court and spun my racquet around a bunch of times. I honestly cannot tell the difference.OK, after further review, I must admit I am wrong. I looked at a bunch of images of Federer hitting, and you two seem to be correct in that he always hits w/ the white side down.
Please accept my humble apologies.