Zab Judah has dismissed claims that he floored Floyd Mayweather in sparring this week as the unbeaten American prepares to face Manny Pacquiao on 2 May.
Mayweather's advisor Leonard Ellerbe has also denied that it happened.
The 38-year-old Mayweather has only ever been officially knocked down once in his career, in the sixth round against Carlos Hernandez in May 2001, but he recovered to win that by a unanimous decision.
Reports this week claimed that Judah, who Mayweather defeated on points back in 2006, had got the better of him recently in sparring, but both Judah and Ellerbe have been quick to refute this.
Ellerbe told Sky Sports News HQ: "False. No. Zab is in camp. Zab is a tremendous fighter - he’s been helping with the preparations along with several other sparring partners.
“They are really pushing Floyd, but nothing like that. It never happened.”
The report, which emerged early yesterday morning, had suggested that it was a "left hook to the body" which knocked the "Money Man" down.