His dedication to his player, and the trust they put in him, and how he earns that trust.
This is from observing him first hand down at Chrissy's place in Boca(where my daughter trains).
Also this is another example of his dedication to his player.
During the CitiOpen, after a gullywasher of a storm. I saw Sascha approach a grounds worker working one of the big court blowdryers and asked them how it worked. How to start it and operate it. He then asked the guy if he could take it.
The guy shrugged his shoulders,and let Sascha wheel it off the court.
But to get to get to the practice courts(which I then saw why he wanted it)...meant lifting it up a flight of stairs. He did so without hesitation.
And off he went to blow off the court for his player.
No other coach did that....or even thought about that.
Naomi didn't do all that well at that tournament.
But if you want to coach, your player has to trust you 100%. The only way to get that trust, is to earn it.
He earns it.