It has been the talk of the sporting world for months but the time for talk is over.
This Sunday our live blog will bring you every punch from what is the richest sporting event ever staged, including round by round analysis.
An official web stream of the Foxtel broadcast is available to order. All you have to do is visit Main Event and they will hook you up for $59.95. It means you don’t need a set top box.
Although if you do have one, just order here for high definition coverage direct to your big screen.
The odds are heavily stacked against UFC superstar McGregor, who is currently at $4 to produce an upset while Mayweather is fluctuating between $1.18 and $1.25.
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Even McGregor diehards would doubt his ability to do what no one else has done — defeat Floyd Mayweather.
But there’s no doubting the Irishman’s inner belief that he can stun the world and punish “Money” Mayweather into retirement.
“He will be unconsciousness in four rounds,” McGregor told the Los Angeles crowd in the first stop of a four-city media tour.
“He has never faced this.”
It’s estimated the fight will make about $606.1 million.
We will have all the live coverage for you below.