For the fourth night in a row, Conor McGregor and Floyd Mayweather went head-to-head in a heated press conference.The two charismatic superstars exchanged insults in New York on Thursday, and tonight they did it all again in London.At times it felt as if they’d run out of things to say to each other - tonight’s face-off mostly consisted of McGregor swearing and Mayweather shouting out “Yeaaah!’ - but excited fans inside Wembley Arena still lapped it up.The two fighters flew into the UK on the same private jet but that doesn’t mean they like each other.Fair play to them, though, if they don’t actually mind each other. They’re doing a magnificent job of disguising it if that’s the case.They’ve ripped each other to shreds (verbally, at least) over the past four days and have resisted temptation to physically lash out before the big night on August 26.

Video: The moment McGregor touched Mayweather

However, there was a moment tonight when McGregor possibly overstepped the mark by touching Mayweather’s head.

The US boxer, to be fair to him, didn’t react.

Watch it here…

Will McGregor be fined?

People on Twitter, however, reckon McGregor could be fined for touching Mayweather.

There are suggestions that both fighters were specifically warned they’d be punished if they laid a finger on each other during the face-off events.

Luckily there weren’t fined for swearing on stage. McGregor would need this fight against Mayweather just to break even.

Watch the London face-off event in full here...