McGregor Tears Mayweather as Rivals Square Up for Epic Fight (Photos)

Mayweather and McGregor go face-to-face for the first time as the countdown continues towards their fight in August 

Dailymail UK has reported that Conor McGregor has bullishly predicted a 4th round knockout of Floyd Mayweather after the pair's world promotional tour kicked off with fireworks in Los Angeles.

Mayweather and McGregor met face-to-face for the first time in front of 11,000 fans at LA's Staples Center since their money-spinning megafight was confirmed.

Despite appearing in front of a home crowd and wearing a stars and stripes tracksuit, Mayweather was mainly booed by supporters, with the large Irish contingent cheering whenever McGregor appeared on the big screen.

An energised McGregor danced around the stony-faced Mayweather, as the former four-weight boxing world champion sat perched on a stool, and afterwards, was typically confident about his chances, despite never previously competing in a professional fight.

McGregor said: 'On August 26, this man will be unconscious, he's too small, he's too frail. I will come out and paint many pictures. I can fight in my styles. I can dazzle him. 'He will be unconscious inside four rounds. He's not experienced this. I don't fear him. This is a limited set of rules that makes this half a fight. If this was a fight, it wouldn't even take one round.

'All I need is a gum shield and I'm good to go. I'm just feeling so good, I can't even contain it. [The press conference] was a good back and forth. 'It's all noise at the end of the day. The fight is the fight. We're going to get in and we're going to fight.'

The 28-year-old McGregor who a tailor-made expletive-laden suit, mocked Mayweather's tracksuit, 'little head' and 'little legs'. But ever the showman, Mayweather pledged to 'kick ass' and told Mayweather he would be 'waving the white flag'.

The issue of fan support was clearly no issue for him either.

'Popularity has nothing to do with what we've got in our bank accounts,' said Mayweather. 'He can be more famous. I always chose fortune over fame. You have a lot of people on social media with 20 million followers, but they may not have $20,000 in the bank.'

Despite the boos and McGregor's trash talking as the pair posed for photographs, Mayweather was full of praise for his opponent.

Mayweather said: 'He does have a chance. Every time two warriors go out there and compete, anything can happen. 'We saw two weeks ago, a guy [Jeff Horn] who started boxing at 18, beat one of the best fighters of all time, Manny Pacquiao. Anything can happen in a combat sport.

'He's young, he's in his 20s, I'm in my 40s. He's active, I'm not.'

Mayweather revealed that the key to the fight taking place has been fan power.

'I've been doing this over 20 years. I've been here before. But he's tough. He's a warrior. The best must fight the best. 'The fans demanded this fight, McGregor wanted this fight, I wanted this fight.

On August 26, it's going to be blood, sweat and tears from the opening bell. We have to give the people what they want to see.'