Former world champion and Sky Sports expert analyst Johnny Nelson believes the possibility exists that UFC superstar Conor McGregor will pull off a huge upset next month when he faces five division world champion Floyd Mayweather Jr.
Mayweather (49-0, 26 KOs), 40 years old, returns from a two year retirement to face McGregor, who is taking part in his first professional boxing match.
The junior middleweight contest takes place on August 26th at the T-Mobile Arena in Las Vegas.
Mayweather is a massive favorite to win the fight and most view the contest as a mismatch.
Nelson is not ready to call the fight a one-sided showdown. He has some concerns due to Mayweather's age, inactivity, smaller size - and matching that up to McGregor's hunger, hand speed and power.
"The one thing you have to look out for, let's not forget, Floyd Mayweather is 40 years old," Nelson told Sky Sports News. "He's been out of the ring for a while.
"I know he's top tier, we're thinking there's no chance this guy [will lose], but Conor McGregor is very fast individual, he's got power in both hands. We want to see how age has affected Floyd Mayweather. In my head, Floyd does it hands down, but let's not forget he's in there against a 29-year-old hungry man that can hit, that's fast and that wants it. So it is not a done deal."
Nelson also felt that McGregor picked Mayweather apart, at least mentally, during last week's four city media tour - where the two athletes traded harsh words in Los Angeles, Brooklyn, London and Toronto.
"He [McGregor] was absolutely sensational, the way he manipulated Floyd in London," said Smith. "He definitely won the press conference tour.
"Never seen anything like it in boxing. It was immense. It was a phenomenal atmosphere. I think I've fallen in love with Conor McGregor over the past week, he is such a personality, he oozes charisma. Floyd is there trying to psyche him out, it is not going to work at this stage. This is what McGregor is used to."
