It looked like the British boxer would be fighting Tyson Fury, and with these two holding all of the heavyweight belts, it would have decided who was the Undisputed Heavyweight Champion of the World.
However, with Fury now having to face Deontay Wilder for the third time, the fights between the two Brits had to be postponed.
Despite many frustrated by what has happened, Joshua vs Usyk still promises to be a great fight which many should be excited to watch.
Here is everything you need to know about the bout coming later this year:
UPDATE July 28th: Eddie Hearn has revealed in an interview with TalkSport that he wants Joshua to 'destroy' Usyk in their upcoming bout in September.
UPDATE July 27th: Footage of Usyk training has emerged and his ability on the speed bag has gone viral!
Elsewhere, Tony Bellew has given his prediction for the clash.
UPDATE July 26th: British heavyweight boxing brute Joe Joyce wants to face the winner of Anthony Joshua and Oleksandr Usyk, he told reporters.
UPDATE July 22nd: With the fight now being fully agreed and a date in place, Usyk has sent a warning message to Joshua.
UPDATE July 15th: Joe Joyce has backed Joshua to get the victory when he fights Usyk in September.
UPDATE July 2: Tony Bellew has warned AJ ahead of his upcoming fight against Usyk.
UPDATE June 24: Joshua's net worth has been revealed ahead of his fight against Usyk and the numbers are staggering!
UPDATE June 18: The fight will be available to watch on pay-per-view and we have all the latest details about it and where you can watch.
UPDATE June 17: The stats of both fighters have been compared as we look ahead to the extremely interesting contest between Joshua and Usyk.
When the two were ordered in May to fight, they had 10 days to sort out a date for the clash.
It has been confirmed that contracts between the two fighters are finalised and the bout will take place on Saturday 25th September 2021.
Although the arena has not yet been revealed, it seems like the fight will go ahead in England and will happen at the Tottenham Hotspur Stadium, which can hold up to 62,000 people.
After checking the odds on the fight, it is easy to see that Anthony Joshua is the clear favourite.
If you think Joshua will get the victory on the night, you can get odds of around 1/3. However, if you think Usyk will provide an upset as he continues his path in the heavyweight division, you can get 9/4 with different bookmakers
When it comes to method of victory, Joshua is the favourite to win by KO TKO or disqualification (4/5). Usyk on the other hand is 15/2.
A draw between the pair on the night is currently being presented at 15/2.
Many believe the round that Joshua is most likely to win the fight in is round 7 or 8, with the odds coming in at 12/1.
Tickets will be available to purchase for the fight on August 2nd for Matchroom members and August 3rd for the general public.
The two are both very experienced boxers, and here are their stats as we look ahead to September:
Wins by KO: 22
Wins by KO: 13
With only one loss between both of them, this fight is surely set to be a great one with a lot at stake.
This is another thing that hasn’t been sorted yet, but it is likely that Sky Sports Box Office will be showing this event on Pay-per-view. Keep an eye out here for more details.
The undercard is one of the hardest things to sort, so they will give themselves some more time to sort it.
However, there will definitely be a lot of boxers wanting to fight at this event as there is going to be a huge audience. Details of the card will be provided once known.
You can keep up to date with all of the latest boxing news and rumours right here at GiveMeSport.News Now - Sport News