The Madeira-born Portuguese knows he is breathtakingly handsome, gifted and wonderful (even if he can't quite persuade us he's as good as Leo Messi).
Yet it's nice for him to be reminded of his greatness by wandering round a museum that he's bankrolled on the island to be a shiny shrine to himself.
It’s unscientific and anecdotal; some even call it dubious. As for sporting theories, they are anyway notorious — selectively researched, slyly sampled and cleverly worded.
It started off with a simple question: Who's the most famous athlete in the world?
On other days, it might be about the marathon that Nadal runs during every five-setter, his gym-sculpted physique, the titanium will and those metal pins holding together that fragile body. Tennis, as in “tennis”, is rarely brought to the table when the “Rafa-backer” attempts to topple Federer from his perch and tries to prop up their man as a possible all-time great contender.
His career highlights include three Grand Slam titles at the 2014 Australian Open, 2015 French Open and 2016 US Open, where he defeated the world No.
Wawrinka stopped attending regular schooling at age 15 to focus full-time on tennis.
However, he continued his schooling by distance education with the French organization CNED, which offered him greater flexibility.
Disclaimer out of the way, now the theory: anyone who has been on a tennis court — pros, weekend enthusiasts or even those who pick and quit the game four times a year during every Grand Slam fortnight — most certainly prefer Roger Federer over Rafael Nadal.