Deontay Wilder vs Tyson Fury. It's the fight we've all been waiting for and it's finally here.
With the WBC heavyweight title at stake, Fury is looking to complete his incredible comeback by claiming the one belt that's always evaded him.
As for Wilder, it's about retaining his crown and making another huge statement to the heavyweight division - namely Anthony Joshua.
AJ and Wilder had been locked in negotiations for the best past of six months prior to the Fury fight being agreed, but for various reasons nothing was ever agreed.
Eddie Hearn said in October that Wilder's "stupid" demands of a 60-40 split were the sticking point, yet some people believe Joshua has simply been ducking the American.
Lennox Lewis is one of those who thinks Joshua doesn't want to fight Wilder and on Friday the former heavyweight champion reiterated that stance.
Speaking in a press conference ahead of Saturday's fight, Lennox said Fury is viewed as the man "that stepped up" after Joshua failed to answer Wilder's call - which AJ will deny.
"I think the view [in Britain] is that Fury is the man that stepped up," said Lewis, per iFL TV. "The gauntlet was thrown out there and he stood up for the British side and wanted to challenge Deontay.
"Deontay came to England to challenge Joshua and Joshua never answered the call, so Fury answered the call.
"About his (Fury's) problems… sometimes problems can be good. To lose the heavyweight championship, we all know how it feels to lose that.
"We know how hard it is to gain it back. He lost it and now he wants it back.
"I see him sacrificing by going to camp, by losing weight and saying to himself, ‘this is something I lost and I shouldn't have lost it, so I’m going to regain it'.
"That’s where I think his head his at. He wants to get it back and he wants to prove everyone wrong. He's in the position to do that."
Fury deserves a lot of credit for accepting Wilder's challenge having only returned to heavyweight boxing in June. He's put his entire legacy on the line.
But whoever wins out of the two in Los Angeles will want to face Joshua next and the Brit will have no choice but to accept.