Only one other fight - Mayweather's 2015 Las Vegas showdown with Filipino superstar Manny Pacquiao - has ever drawn more, racking up 4.6 million buys to earn around $600 million.
"He did say an MMA fight".
UFC Lightweight Champion Conor McGregor hasn't been seen in the Octagon since a knockout victory over Eddie Alvarez at UFC 205 to win the lightweight strap. Focusing on business as much as fighting (a film, whiskey and a clothing line soon followed the Floyd bout), he wanted a stake in the UFC itself. However, it looks like he could have a bright future in both.
"We'll see what happens", McGregor told TMZ in NY on Friday.
Pacquiao told Agence France-Presse (via Yahoo Sports) last week he'd have "no problem" taking on McGregor and said there were some initial contract discussions between the camps, "but we have not yet had any follow-up conversations".
"I think a true fight is what I want to do next", revealed McGregor.
Guterres warns against 'sleepwalking' into war over North Korea
Japan has insisted that now is the time to keep up maximum pressure on Pyongyang, not start talks on the North's missile and nuclear programmes.
"A real fight, what's a real fight?"
There you have it.
The most logical option would be a fight against interim lightweight champion Tony Ferguson, but "El Cucuy" recently underwent elbow surgery.
Although the Mayweather-McGregor pay-per-view total is nearly double the third biggest fight of all time, the 2007 bout between Oscar De La Hoya and Mayweather which had 2.48 million buys.
The 29-year-old shot those down in emphatic action, however.