WATCH: 'That's the worst shape I've ever seen him in' - Conor McGregor's jibe at Mayweather
Floyd Mayweather weighed-in well below the 155lbs limit as he came in lighter than expected for his eagerly anticipated showdown with Conor McGregor in Las Vegas.
McGregor accused Mayweather of being in "the worst shape I've ever seen" after he outweighed the American by almost four pounds at Friday's weigh-in, with the Dubliner defying concerns he would not make the weight as he hit the scales at 153lbs.
The UFC champion suggested he would enter the ring at the T-Mobile Arena on Saturday night at around 170lbs, yet Mayweather played down fears that he coming into the fight a little too light.
"Weight doesn't win fights, fighting wins fights," the American said, while being booed by a huge Irish crowd at the weigh-in.
"I'm in great shape. I have been eating today and I'm in the best shape I have been for a long time.
"This won't go the distance, mark my words. This is going to be Conor McGregor's last fight also.
Who will win between Conor McGregor and Floyd Mayweather?
"The fans can't fight for him. It comes down to the two competitors."
Mayweather, 40, again cut a noticeably more relaxed figure than the animated McGregor, who on Saturday makes his professional boxing debut at Las Vegas' T-Mobile Arena.
In a scenario similar to in his 2007 fight with Ricky Hatton, Mayweather was roundly booed in his home city as his 29-year-old opponent's supporters vastly outnumbered his own.
He also again looked in fine shape, and in coming in so light has no doubt prioritised the speed that has contributed so much to his success and is an advantage he is expected to hold over McGregor.
"He's full of water, that's the worst shape I've ever seen him in," the Irishman said after he weighed in at the same venue. "That's the worst shape I've seen in him. He looks out of shape, I'm going to breeze through him.
"I'm a professional, I make weight. It's about sacrifices, dedication, it's focus, I make it, and that's it. I've put in the work as everyone can tell. I'm ready.
"I'll be a lot bigger than him. Pushing 170lbs, yes."
McGregor also paid tribute to his vocal fans, as he received a rapturous reception from a predominantly Irish crowd.
"You'll never beat the Irish, and that's it. Las Vegas is ours now," he declared.
"I'll stop him in four. Let's see if he can take it. He's over there twiddling his thumbs and twitching away."
With huge backing from a vast travelling army of Irish supporters, there is no doubt who is winning the battles out of the ring ahead of the fight billed as the biggest of 2017.
Now McGregor has to back up his boasts where it matters as he makes his professional boxing debut in front of the watching world.