Times Square, New York City - WBC/WBA welterweight champion Floyd Mayweather Jr. discusses his upcoming fight with tough challenger Marcos Maidana, which takes place on September 13th from the MGM Grand in Las Vegas. The two boxers began a five city press tour on Monday. They previously  met on May 3rd, at the same Las Vegas venue, and Mayweather won a twelve round majority decision. Mayweather talks about the rematch, his challenge to Maidana to put up his purse on a side bet, last Saturday's fight between Saul "Canelo" Alvarez and Erislandy Lara, thoughts on Canelo looking to take his May date and more.