Mayweather's last knockout victory was six years ago and he said: "I used to have a 90 percent knockout ratio.it's obvious I slipped somewhere".
"He's a lot younger. So, if you look at everything on paper, it leans toward Conor McGregor".
"I'm not the same fighter I was two years ago". And I'm in my 40s.
Both fighters will face a 154-pound weight limit the night before the bout.
Mayweather turned 40 in February, while McGregor celebrated his 29th birthday on the final stop of the press tour in London. It'll be "Money's" first bout since September 2015. McGregor last fought in the octagon in November.More news: 'A Beautiful Spectacle': Geographer Makes Case To Witness Solar Eclipse
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The undefeated boxing legend sternly added that him fighting McGregor "is for a cause", dedicating his performance on August 26 to "American people and all the Blacks around the world". When Rodriguez asked McGregor if he could beat Rocky III's Rocky Balboa, McGregor said "I can't remember if that's the one with the dancing monkeys or not", in reference to Apollo Creed's gym that housed all black fighters. But the former five-division world champion admitted that McGregor, 11 years his junior, has a an edge over him - on paper.
Before partying with his pals and posing with fans, the UFC ace said: 'I'm going to have a drink and celebrate. "I'm not what I used to be", he told Smith.
"McGregor may have that element of surprise, so you never know, but the longer the fight goes on, you expect Mayweather to suss him out".
Speaking to ESPN, Mayweather said his inactivity and age means the Irishman has the upper hand, but many have passed this off as "Money" trying to hype the fight. What happens? Any damn thing can happen in a fight. If you're a fan of either and are unable to attend either fighter's media day workouts and Q&A sessions this week, Showtime Sports has you covered.
McGregor is a big underdog because of his lack of professional boxing experience, but Mayweather says he will pose a real threat due to his advantages with youth, size and reach.