Fathom Events, Mayweather Promotions and Showtime bring you boxing superstar and pound-for-pound king Floyd \"Money\" Mayweather (48-0, 26 KOs) taking on power-punching, two-time welterweight world champion Andre Berto (30-3, 23 KOs) in what is expected to be the final fight of Mayweatherâs illustrious 19-year career. The fight will be broadcast live from Las Vegas to movie theaters nationwide on Saturday, September 12 at 8:00 p.m. ET / 7:00 p.m. CT/ 6:00 p.m. MT/ 5:00 p.m. PT. Mayweather will test himself against a hard-hitting fighter hungry for his chance to score a historic upset. If triumphant, he would match the record of the late heavyweight champion Rocky Marciano, who retired in April 1956 with a record of 49-0. Equaling Marciano's record, one of the most hallowed in all of sports, would reaffirm Mayweather's legendary status in the sport and reinforce his claim as \"The Best Ever.\"