Can being relatable be considered a superpower?

It was steamy dog day afternoon at the Uniqlo flagship on Fifth Avenue. At the center of the mezzanine sales floor a curtained booth had been constructed for a round of press interviews preceding a question-and-answer session.

Attending this event was a horde of Federer fans, a number of whom had lined up and camped out overnight in hopes of finding themselves in the presence of a tennis luminary whose statistical accomplishments are so overwhelming and have been so much rehearsed across the last two decades that eventually they were collapsed into the acronym GOAT — for “Greatest of All Time.”

Mr. Federer, who is Swiss, may be that. He is surely the most elegant and balletic athlete on the pro tennis circuit. He is also, assuredly, the richest.

That is largely because he is what his biggest groupie, as the Vogue editor Anna Wintour calls herself, once termed an incredible businessman — one who, when he left behind a two-decade-long relationship with Nike in 2018, segued into a n even more lucrative deal, a 10-year contract with the Japanese retailer Uniqlo widely reported to be worth $300 million, that will carry him well past his playing years.