Conor McGregor is the clear underdog for his bout with Floyd Mayweather in Las Vegas tonight.
But professional MMA fighter Richard Griffin reckons the Irishman can use this to his advantage.
He argues the undefeated Mayweather, 40, will be under a huge amount of pressure not to lose to a MMA fighter.
Griffin told Express.co.uk: “Just think how devastated the boxing community would be if a UFC fighter went in there and beat up the person who is supposed to be the best in the world.
“I know they are hoping for McGregor to go in there and throw a kick, or go for a take down. But he’s only been training in boxing and that will be instilled in him.
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“It is going to be a great day for MMA, but could be a proper bad day for boxing if it goes pear-shaped for Mayweather.
Griffin, who works as a coach at The Commando Temple fight club in Greenwich, believes Mayweather’s unblemished 49-0 record could prove to be his downfall.
He said: “He’s got his reputation for being the best, which is rarely at stake.
“McGregor’s hungry. He hasn’t really got that much to lose. He’s getting paid a ridiculous amount of money. Either way its a win-win for him.
“If Mayweather loses now then he is no longer perfect.”
But Griffin’s colleague and boxing coach Cuong Hua can not see much beyond a comfortable Mayweather victory.
He thinks McGregor has bitten off more than he can chew by choosing to face a former five-division champion in his first professional boxing match.
“The consensus in the boxing world is that Mayweather is going to school him,” Hua said. “It’s going to be total domination in the ring.
“People in the boxing community don’t think McGregor would stand a chance against a national champion, let alone the greatest boxer of a generation.
Hua predicts McGregor will struggle to get anywhere near the American once they are in the ring.
He said: “The only chance I think McGregor has got is if he finds that lottery ticket and hits him with a big shot.
“But saying that, you can literally count on one hand the amount of times Mayweather has been hit clean throughout his whole career.
“For McGregor to find the target it is going to be tough. Mayweather is just such a good defensive fighter – one of the best of all time.
McGregor faces Mayweather at the T-Mobile Arena in Las Vegas from 9pm PDT on Saturday August 26 (5am BST on Sunday morning in the UK).