Michael Montero of Montero on Boxing joins The Boxing Rant to discuss the final fight of Floyd Mayweather's career as he squares off Andre Berto. The guys discuss the latest article from Thomas Hauser (Can Boxing Trust USADA?) that brings Mayweather's relationship with the United States Anti-Doping Ageny under the microscope. Kenny and Michael discuss the PBC and the many layers of perception that surround the fledgling boxing start-up. Montero on Boxing delivers his view of Al Haymon's boxing project and the guys discuss its' impact on the rest of the boxing universe.Mayweather vs. Berto is of coarse the biggest fight of the weekend, but the undercard has some great action featuring two championship fights. The guys preview Badou Jack vs. George Groves and Martinez vs. Salido 2. In other action this Friday evening, top prospect Oscar Valdez steps up against the hard-hitting Chris Avalos on TruTV and Adonis Stevenson and prospect Errol Spence return in separate Premier Boxing Champions bouts.