By Edward Chaykovsky

Floyd Mayweather Sr., father and trainer of WBC/WBA welterweight champion Floyd Mayweather Jr. (48-0, 26KOs), says his son is still fully capable of continuing his career at the top level.

On September 12th at the MGM Grand in Las Vegas, Mayweather will make what he says is the final ring appearance of his professional career when he takes on former two-time world champion Andre Berto.

Some have said that Mayweather should revisit, for his 50th pro fight, a rematch with Manny Pacquiao. The May 2nd showdown broke every financial record possible in boxing and had 4.4 million pay-per-view purchases.

Floyd Sr. sees no reason for that.

"There’s nothing to even talk about with that fight. Floyd beat Pacquiao and it used to be that people would be talking about that and ain’t nobody thinking about that fight. That’s nothing. Floyd beat another opponent, that’s what he did. Nobody spectacular, nobody with no significance, no one with no name. He had one with a name and with no class to go with it," Mayweather Sr. told On The Ropes Boxing Radio.

Pacquiao and his trainer Freddie Roach are under the belief that they can easily win a rematch, because the Filipino star says that he injured his right shoulder during the fourth round of the their fight. 

"That’s Pacquiao blowing smoke with no hope. Hey, that’s Pacquiao right there. Pacquiao is blowing smoke, that’s what he’s doing. And Freddie Roach is saying, “It’s gonna be better this time than it was last time,” Freddie Roach is a joke, blowing smoke with no hope. That’s the one right there. Pacquiao’s the last thing in the world that Floyd should be even be thinking about, unless they deliver it like they delivered the last time, otherwise it shouldn’t even be going on at all," Mayweather Sr. said.