In March 2023 Joyce was the most dangerous and avoided contender in heavyweight boxing.
He had great wins over Daniel Dubois, Carlos Takam, Christian Hammer and Parker and people were finding ways not to fight the ‘Juggernaut’, tying themselves up in other bouts.
Then came the two devastating knockout defeats against Zhilei Zhang, which took me by surprise. I thought Joyce would win the first one, then I thought he would correct his mistakes and adjust in the rematch.
If Joyce loses to Chisora – which would not be a shock – it puts him in a really bad position.
That would be three defeats in his past four fights and he will be moving further away from world title contention.
He will then have to make a decision: does he stick around and become a measuring stick for the young heavyweights out there, those clamouring to have him as a scalp on their record?
That is no way for an Olympic silver medallist to see out his career.
So there is a level of desperation for both Joyce and Chisora. It will be attritional and gruelling – and someone will be heartbroken.
I am convinced we will know quite early on in this fight – within a minute – how the result will go and which boxer has the most left in his tank.
Steve Bunce was speaking to BBC Sport’s Kal Sajad.