By Edward Chaykovsky

Jeff Mayweather, uncle of retired former five division world champion Floyd Mayweather Jr., says his nephew will never fight Manny Pacquiao in a rematch - because of Pacquiao's continued claims that he won their fight which took place in May 2015.

Their fight, which Mayweather won by twelve round unanimous decision, broke every single financial record in boxing with 4.6 million pay-per-view buys and over 600 million in revenue. 

To most ringside observers, Mayweather won a clear decision. Pacquiao was not one of those people. He felt enough was done to earn the decision. Afterwards, he revealed that he entered the fight with a right shoulder injury and said his performance was affected.

Jeff claims the main reason the Pacquiao rematch never happened is because the Filipino superstar would never acknowledge Mayweather as the winner - and also said he would have likely knocked Mayweather out if not for the shoulder injury.

"The Pacquiao fight is not going to happen because Pacquiao wasn’t man enough to just admit that he lost without making up some bogus excuse," Jeff told On The Ropes Boxing Radio.

As far as UFC superstar Conor McGregor, Jeff says he will never get Mayweather in the ring. For months Mayweather and McGregor traded words on social media, videos and interviews. Jeff says the war of words, at least from the Mayweather side, was never anything serious.

"With McGregor, Floyd was just toying with the media because Floyd would get prosecuted for fighting Conor McGregor, it would be a fight that’s so easy, it would be ridiculous. That’s one of those fights where you will have die-hard MMA fans saying, “He will do this, he will do that,” but they know he won’t do nothing. They know he has no chance and it doesn’t have to be Floyd, it can be a whole lot lesser boxer than Floyd," Jeff said.