Federer has more Grand Slam titles, 20, than any other man to have played tennis.
Last week the Swiss legend became the oldest men’s world No 1 at the age of 36.
But it is how he is off the court that separates him to the rest, according to Clarey.
“Well I think what’s interesting with Roger is that he is very empathetic,” Clarey said on The Tennis Podcast.
“I think if I had to pick one word to define him it would probably be that, off the court.
“He is able to meet people from all walks of tennis life and all walks of life in general, and he finds a way to relate to them.
“I think he feels what they are going through and frankly that’s not really the hallmark of many tennis champions or many sports champions at all.
“Usually they’re so in their bubble, what works for them, what makes them click and operate on all cylinders.
“And Roger Federer has that rare quality and I get tired of giving him compliments, I know all of us sometimes do, but it’s true.
“He really has a way whether it’s the ball kid, whether it’s the tournament director, if it’s the player he just trounced one and one, maybe even the guy who just beat him, he really has this ability to feel what others are feeling.
“That comes through with his engagement with them and it also applies with journalists to some degree too.”
Source : EXPRESS