The May 2 Floyd Mayweather Jr.-Manny Pacquiao fight shattered the previous record for total pay-per-view buys and now ranks as the highest-grossing pay-per-view of all time by generating more than 4.4 million U.S. buys and more than $400 million in domestic pay-per-view revenue alone, according to a press release from HBO Sports, which co-broadcasted the event with the Showtime cable network.

With additional revenue from the live gate at MGM Grand in Las Vegas, international television distribution, sponsorships, closed circuit and merchandise sales, the event is expected to generate in excess of $500 million in gross worldwide receipts. The news was announced jointly by Showtime Networks Inc., a subsidiary of CBS Corporation, and HBO in conjunction with event promoters Mayweather Promotions and Top Rank, Inc.

The welterweight world championship unification bout nearly doubled the previous record of 2.48 million buys generated by the Oscar De La Hoya-Mayweather event in 2007 and nearly tripled the record $150 million in U.S. pay-per-view revenue generated by Mayweather-Canelo Alvarez in 2013.

Live gate receipts for the star-studded event at the MGM Grand Garden Arena produced more than $71 million in revenue, dramatically eclipsing the previous live gate record of $20 million (for Mayweather vs. Canelo) for both the sport of boxing and Las Vegas.

Additionally, Mayweather vs. Pacquiao set the record for closed circuit admissions and revenue both in Las Vegas and at establishments nationwide. The event sold nearly 46,000 closed circuit admissions at MGM Resorts International properties in Las Vegas alone and was available at more than 5,000 bars, restaurants and commercial establishments throughout the U.S.