If Floyd Mayweather Jr. is actually retiring, it appears he'll be going out with one of the biggest financial duds of his professional career. Kevin Iole of Yahoo Sports reported that Mayweather's Sept. 12 bout with Andre Berto drew somewhere between 400,000 and 550,000 pay-per-view buys?his lowest total in nearly a decade. Sources differed on the actual total, but the sales nonetheless represent the overall tepid nature of a bout that was seen as an overwhelming mismatch from the start.