Floyd Mayweather (49-0, 26 KOs) has been out of the ring for nearly two years.
On August 26th at the T-Mobile Arena in Las Vegas, he returns for the first time since announcing his retirement following a twelve round decision win over Andre Berto.
The opponent, which nobody saw coming, is UFC superstar Conor McGregor.
Mayweather admits that he's no longer the same fighter who dominated his way to world titles at super featherweight, lightweight, junior welterweight, welterweight and junior middleweight.
McGregor, because he lacks any experience as a pro boxer, is a tremendous underdog. It doesn't help any that Mayweather is regarded as one of the best defensive fighters of all-time.
Mayweather is not overlooking him, and says everything - at least on paper - gives the edge to McGregor.
The former pound-for-pound king sounds concerned, explaining that his skills have eroded over the years.
"He's a lot younger. When you look at myself and Conor McGregor on paper, he's taller, has a longer reach, he's a bigger man from top to bottom. He's a lot younger, so youth is on his side. And I've been off a couple of years. And I'm in my 40s. So, if you look at everything on paper, it leans toward Conor McGregor," Mayweather stated during an interview with Stephen A. Smith.
"I'm not the same fighter I was two years ago. I'm not the same fighter I was five years ago. I lost a step. A fighter like Andre Berto isn't even supposed to go the distance with Floyd Mayweather, but remember, I was 38. It's obvious I'm slipping a little bit to even let a fighter like Andre Berto go the distance with me. I'm not what I used to be. I used to have a 90 percent knockout ratio. It's obvious I slipped somewhere. Something has taken a toll on my career."