LAS VEGAS– Floyd Mayweather Jr. will earn at least a guaranteed purse of $32 million for the third time in his career against the $1.5 for Marcos Maidana for Saturday night's welterweight clash at the MGM Grand on Showtime Pay-Per-View.

Mayweather's purse is equal to those he took in for his unanimous decision victories over Miguel Cotto and Robert Guerrero in May of 2012 and May of 2013, respectively.

Last September, Mayweather dethroned Saul Alvarez by majority decision for the RING and WBC 154-pound championships in a bout that became the highest-grossing boxing event of all time with nearly $150 million in revenue reported. Mayweather earned a career-high guaranteed purse of $41.5 million against Alvarez.

"This is a great thing to be able to generate these record purses and these record amounts of revenue, it's a wonderful, wonderful thing," said Mayweather Promotions CEO Leonard Ellerbe of Mayweather (45-0, 26 knockouts), who will be the recipient of the Sugar Ray Robinson Award for the "2013 Fighter of the Year" from the Boxing Writers Association of America at its dinner on Thursday night.

"Here is a little guy from Grand Rapids, Michigan, who is in the bright lights of Las Vegas and he's become a global superstar. If Saturday was his last fight, I'm personally going to be the happiest man in the world. This performance could be his last performance and his way of riding off into the sunset."

The card also includes a welterweight clash of former champions between Amir Khan and Luis Collazo, who will take home $1.5 million and $350,000, respectively, according to the Nevada State Athletic Commission.

Three-division titlewinner Adrien Broner will pocket $1.25 million against $150,000 for 140-pound rival Carlos Molina and middleweights J'Leon Love and Marco Antonio Periban will earn $100,000 and $35,000.

GOLDEN BOY CEO RICHARD SCHAEFER DEFENDS MGM

During the press conference leading up to Manny Pacquiao's unanimous decision over Tim Bradley on April 12 at the MGM, Top Rank Promotions CEO Bob Arum ripped the host venue — with its President of Sports and Entertainment, Richard Sturm in attendance — for advertising Mayweather-Maidana throughout the casino during Pacquiao-Bradley fight week.

On Wednesday, again, with Sturm nearby, Schaefer came to defense of the MGM, where Mayweather will fight for the 12th time.

"I don't want to go into what happened three weeks ago. That was uncalled for and I think that it was uncalled for in that public forum to deal with matters like that and it's not just the MGM Grand but it's the people. The people make the the MGM the greatest property here in Las Vegas and in my books around the world. There are many people here, thousands. Tens of thousands of people who are employed by the MGM resorts, over 60,000 people," said Schaefer.

"This was not an attack just against my friend here to the left but it was an attack on all of those people. We can not condone that kind of behavior because what the people in at the MGM have done for boxing is out of this world. They have put together the biggest and best promotions and that's why boxing is today where it is, because of these people. These people who are passionate about the sport of boxing. It is a pleasure and an honor for me to introduce to you, somebody who has been with this company for 40 years. They are the people who make the MGM the greatest and grandest property in the world."