It appears as though the combination of UFC champions Chris Weidman and Ronda Rousey has helped bring about the promotion's most successful pay-per-view fight card of the year.
According to MMAFighting.com's Dave Meltzer, the show is believed to have done between 500,000 and 545,000 PPV buys.
Although the July 5th card was also expected to feature the culmination of the Chael Sonnen/Wanderlei Silva rivalry from TUF: Brazil 3, their removal from the show did not seen to hinder the buy rate. The card still featured two intriguing title fights; the main event between Weidman and Lyoto Machida, which was an entertaining five round battle, as well as a women's bantamweight tilt between Rousey and Alexis Davis, which lasted a grand total of 16 seconds.
The last PPV card to exceed 500,000 was UFC 168, which is believed to be one of the few shows to cross the 1 million buy rate mark. Interestingly enough, that card also featured both Weidman and Rousey in the main and co-main event slots respectively.
While UFC 175 was undoubtedly the most successful fight card of the year to date, the heated rivalry between Jon Jones and Daniel Cormier, which culminates at UFC 178 in September, will likely surpass those numbers. Their brawl at the MGM Grand on Monday afternoon has created a surge of interest in the upcoming card, and coupled with an undercard that features fighter like Conor McGregor, Dominik Cruz and Cat Zingano.