With the mega-fight between Floyd Mayweather Jr. and Conor McGregor almost a month out — and their whirlwind four city tour now behind them — this marks a point in training camp where each fighter must start crafting a gameplan.

Many in the boxing world believe that McGregor has no shot at beating Mayweather — with ESPN personality, Max Kellerman, vowing he won’t land a single punch.

Even those from MMA give McGregor a little chance and compare it to a shark trying to fight a lion in the jungle.

However, some of MMA’s biggest trainers have still voiced their opinion as to how Conor could pull off the stunning upset.

While a choice excerpt appears below, head to ESPN to read the full fight breakdown from some of MMA’s biggest trainers.

Mike Brown, American Top Team

People think there’s no chance. I’ve heard people go, “Oh, there’s literally zero chance.” I’ve heard boxing analysts say that. And the chances are low. Whether it’s 5 percent, 10 percent — whatever it is, it’s low. But I think what McGregor does have is that Mayweather is the oldest he’s ever been. He’s slightly worse than he’s ever been. McGregor is a big guy, maybe the biggest guy Mayweather has ever fought or close to it. He’s a southpaw and he’s doesn’t move like a traditional boxer. So, the angles Mayweather is used to seeing are slightly off.

All of those variables tip it a little to Conor’s favor. Not like he’s a favorite, but there are some things that make this a little different from a normal boxing fight. McGregor could never win a decision, obviously. The only way he can win is getting Mayweather with a shot that he doesn’t see coming, hurting him and finishing him. You never know if that big shot could land.

Duke Roufus, Roufusport MMA

A lot of people don’t understand Conor has more boxing experience than he’s showing. He amateur boxed at a club in Ireland that has a top coach.

But Floyd is not only one of the greatest fighters of his era, he’s one of the most elusive. It’s going to be tough for Conor to box 12 rounds. You’re going to throw more than you’re used to and you’re going to miss. It’s very tiring. That’s what Floyd does so well. When you miss, you start second-guessing yourself as a fighter.

I don’t know how many people will remember this, but Zab Judah, who is a real slick boxer, fought Kostya Tszyu [2001] and at times, Zab was very confused with the pace. Kostya fought like a mixed martial artist. He’s Russian and had this slower, meticulous pace — at a very long range. If you’re not used to that, it can really throw your timing off.

When fighters press Floyd, that’s where he’s magic. Conor almost needs to be like a jiu-jitsu guy who needs you to come into his guard. Stay back, use your reach and show him a style he’s never seen before. I give him a 20 percent chance if he does that, I really believe that.

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