By Keith Idec

According to his father/trainer, Floyd Mayweather Jr. undersold how little he trained for his technical knockout victory over Conor McGregor.

Floyd Mayweather Sr. told Phillyvoice.com that his son “hardly trained” for his 10th-round stoppage of McGregor on August 26 in Las Vegas. The younger Mayweather acknowledged during the post-fight press conference that his notoriously brittle hands prevented him from sparring for at least a month before their scheduled 12-round, 154-pound bout at T-Mobile Arena.

His father revealed that training camp went way worse than that for the 40-year-old Mayweather’s first fight in nearly two years.

“Floyd would have stopped [McGregor] a lot earlier if he worked even a little bit,” Mayweather Sr. told Phillyvoice.com. “Floyd did not train for that fight – he literally whupped that boy, that’s what he did. Just imagine if my son would have prepared and would have trained the way he [normally] would for a fight, he would have stopped [McGregor] even sooner.

“What the world saw was only 50 percent of what my son is capable of doing. Yes, you can say it – it was like he literally came off the street to beat that man. That’s how good my son is. That’s basically it. I used to run with my son, but we haven’t ran together in a long time. As far as I’m concerned, he didn’t run for this fight. Floyd didn’t put all of what Floyd could do in the McGregor fight.”

Mayweather (50-0, 27 KOs), who has been praised for his work ethic throughout his 20-year pro career, stated throughout the promotion that he couldn’t train the way he once did because of his advanced age. Most fans and media dismissed Mayweather’s claims as a way to sell a complete mismatch as a competitive fight.

He did get off to an extremely slow start, though, so slow that one judge, Dave Moretti, scored each of the first three rounds for McGregor, a UFC superstar who made his boxing debut.

“If the real Floyd Mayweather Jr. would have showed up for the McGregor fight,” Mayweather Sr. said, “McGregor wouldn’t have gotten out of the second round.”

Another unnamed member of Mayweather’s team confirmed to Phillyvoice.com the elder Mayweather’s assessment of his son’s training camp.

“Floyd hit the speed bag or did a light run,” the Mayweather team member said, “but he spent more time promoting the fight and at his businesses than preparing for McGregor. There’s no way around it, Floyd is a genetic freak. He’s been fighting so long that things just come naturally to him. All this social media stuff about McGregor going 10 rounds with the best in the world is bullsh*t. It’s actually the other way around – a 50-percent version of Floyd Mayweather came off the street and pounded one of the world’s best MMA fighters, and hardly trained to do it. It says how much better Floyd is than McGregor.”

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.