Floyd Mayweather Jr. vs. Marcos Maidana II, billed as Mayhem, was a professional boxing match contested on on September 13, 2014, for the WBC light middleweight title and the WBA, WBC, and The Ring welterweight championship.

[3][4][5][6] It was announced in July that rematch was to take place in September at the MGM Grand Garden Arena in Las Vegas, Nevada.

[10] They had twice before entered into negotiations, with Pacquiao pulling out in January 2010[11] and Mayweather refusing the bout in July 2010.

On January 30, TMZ reported that the fight had been agreed upon by both sides and that a formal announcement would be made in the "next couple of days."

However, members from both sides, including Bob Arum and Stephen Espinoza, refuted the report, saying that the deal had not been finalized yet and that negotiations on what would be a joint pay-per-view (Showtime–HBO) telecast of the fight were still clearing out the last significant issues before the deal could be finalized.