As Mike Tyson and Roy Jones Jr. make their final preparations for their pay-per-view event this weekend, the rules for their fight are starting to be made clear.
Both fighters have come out of retirement to make the November 28 fight, and with Jones aged 51 and Tyson 54, there are some unusual rules that have been put in place for the exhibition fight.
While the match-up will be recognizable to even casual observers, there are some key differences compared to a standard competitive bout.
What are the rules for Tyson vs. Jones?
The California State Athletic Commission (CSAC) has ruled that instead of a regular 12 rounds, the pair will compete over just eight rounds. Those rounds will be only two minutes long, compared to the standard three minutes each.
The reduced time spent in the ring is partly due to both fighters refusing to use headguards, meaning the CSAC put in the extra restriction.
If either fighter suffers a cut, then the fight will be stopped, and no knockouts are allowed.
To further reduce the damage done to both men, fighters will be required to wear 12-ounce gloves to soften the blows exchanged.
Outside of the ring, there will be no judges to score the fight, but instead, the World Boxing Council will host Christy Martin, Vinny Pazienza and Chad Dawson viewing remotely to decide the fight result.
No official winner will be recorded but the fighter picked by the judges will win a ‘Frontline Battle Belt’ commissioned for the event.
California State Athletic Commission executive director Andy Forster confirmed: "Tyson and Jones Jr. won't be wearing headgear for the fight.
"They'll be lacing up 12-ounce gloves and there won't be any judges present at the fight to score the action.
"So, technically, there won't be a winner unless a knockout somehow occurs, or either fighter is deemed unfit to continue.
"They can move around and make some money, but I told them if you get cut, it's over."