The point is that the "Big Three" have dominated tennis — with a little help from Andy Murray and Stan Wawrinka — for 10 years and more.
Four or five seasons ago, there was a theory the "Big Four" — as they were then — were about to be eclipsed by rising stars such as Grigor Dimitrov and Milos Raonic.
Yet that prediction fell flat, and even though we keep identifying eye-catching young talents, not one has yet been able to disrupt the tennis establishment. This French Open was the 11th straight major to be claimed by a thirty-something male.
"There's a certain mentality that they [the younger players] don't have yet, that the other three just have," said Boris Becker, who famously won Wimbledon at 17. "It's not the forehands. It's not the fitness. It's a certain attitude that makes the difference between winning and losing.
"I was just reading a stat that no active player under 28 apart from [Dominic] Thiem [Nadal's victim on Monday] has been in a grand slam final. That is not a compliment for anybody under 28."
At least tennis fans can point to a new, fresher-faced gang of three who occupy the places from No4 to No6 on the rankings ladder. Thiem is the most experienced member at 25, followed by 22-year-old Alexander Zverev and 20-year-old Stefanos Tsitsipas. Collectively, they have not yet built up the same thick scar tissue as the likes of Dimitrov.
Even so, there is a recurring problem. Beat Djokovic, Nadal or Federer in a best-of-five showdown, and you usually have to play another legend.
"As much as I respect Roger, Rafa, Novak — who else?" asked Becker last week. "Show up. Give me something I want to talk about. Eventually they will be too old. But you want to see the passing of the torch while they are still in their prime."