Originally Posted by treblings
Federer hit an ace. as simple as that. he does that even against people like Djokovic. there is nothing you can learn theoretically, sorry
I’m not so sure about Federer ace. So far nobody described how to analyze theoretically and practically ball path after contact. That’s why nobody knows where he/she must move with adjustable steps to get into proper receiving position. Maybe there should be no aces at all.
You are right, he isn't Alejandro Falla.