Originally Posted by BMC9670
Physical practice is repetition to engrained correct technique. Make sure he is practicing his serve with perfect form, otherwise he is practicing bad habits that can let him down in a tournament. Don't "over practice" in terms of number of serves.
Bottom line: positive pressure, not negative pressure. In tennis, there are no dire consequences when you lose, but only good ones if you win.
For the physical practice, how much server do you do per session ?
We do like 200, is it too much ?
And i try to repeat what his coach teach him, continental grip, motion, follow, ...
And for the mental, yes I took the wrong approach by using negative consequence.
Thanks BMC9670, that's a good advice, I will apply it.