The event nobody thought would actually come off, will see a main event later tonight with boxing legends Mike Tyson and Roy Jones Jr. colliding in an eight round exhibition bout.
Their fight, which is taking place under modified rules with no headgear and two-minute rounds, will take place at Staples Center in Los Angeles.
Tyson, 54-years-old and an undisputed heavyweight champion, retired from the sport in 2005.
He weighed in at a lean 220.4-pounds on Friday.
Jones, 51-years-old and a former four division champion, came in at 210-pounds. Jones has been far more active and last saw action in early 2018.
The California State Athletic Commission has spoken to both boxers and cautioned them about going out there to knock each other out.
Worried about the possibility of a serious in-ring injury, the CSAC is hoping the contest plays out in the manner of a hard sparring session.
However, Tyson is planning to take the fight to Jones from very first bell.
"I'm pitching punches and everything else is up to Roy. I'm coming at him. He doesn't have to worry about me. If I'm running anywhere - I'm running right at him," Tyson said.
"Maybe I don't know how to go easy. I don't know. I don't want to say the wrong thing. I don't want the commission mad at me."
While the CSAC will not provide any judges, the World Boxing Council will have three appointed officials scoring the fight. And there will be a winner announced at the end of the fight.
The contest will be carried on pay-per-view, with an undercard that features another exhibition clash with 23-year-old YouTube star Jake Paul taking on former NBA player Nate Robinson, 36-years-old.