By Edward Chaykovsky

WBC/WBA welterweight champion Floyd "Money" Mayweather (48-0, 26 KOs) is not regretting his selection of Andre Berto (30-3, 23 KOs) as the Showtime Pay-Per-View opponent for September 12 from the MGM Grand Garden Arena in Las Vegas.

Mayweather says he reviewed the entire welterweight division and found Berto to be the perfect for what Floyd's is calling the "final fight" of his pro career.

There has been a mountain of criticism over the fight. Berto has gone 3-3 in his last six fights and two of those defeats came against fighters, Robert Guerrero and Victor Ortiz, who Mayweather already beat.

Due to the circumstances of both fighters, the oddsmakers have listed Berto as one of the largest underdogs in the history of pay-per-view fights of this level. Some betting outlets have him as big as an 80-1 underdog.

"When you look at the two divisions I fight in, there's one man who stands all alone. I looked at the division and asked who's always in a tough exciting fight, who has quick hands and who always gives it 100 percent, it was Andre Berto," Mayweather said. "This is a guy I can't overlook. He's dedicated to the sport just like myself and he's going to push me."