If what Dana White claims is true, then the Floyd Mayweather vs. Conor McGregor broke the record for most pay-per-view buys in an event, but absolutely shattered it.
In a social media post, White said the August 26 pay-per-view did 6.5 million pay-per-view buys, breaking the record set by Mayweather's 2015 fight against Manny Pacquiao. The Pacquiao fight did 4.6 million buys, which broke the previous record set by Mayweather vs. Oscar De La Hoya back in 2007 (2.4 million buys).
The post can be seen below.
It's almost a guarantee that the pay-per-view will do a million buys which would make it the second boxing pay-per-view in 2017 to do a million buys in the United States. The last time two boxing cards did at least a million pay-per-view buys in a year was back in 2013, when Mayweather's fights against Robert Guerrero and Canelo Alvarez did a million and 2.2 million buys, respectively. With this massive pay-per-view on August 26, Mayweather could lay claim to headlining the four biggest boxing pay-per-views in history.
Mayweather defeated McGregor via TKO in the 10th round in McGregor's professional boxing debut. Mayweather had a guaranteed purse of $100 million while McGregor had a purse of $30 million.