Usyk, 36, was expected to have an undisputed showdown with boxing’s pound-for-pound king, Tyson Fury earlier this year.
But the heated negotiations collapsed which handed Dangerous DDD the opportunity of a lifetime.
Dubois, 25, goes into this fight off the back of a hard-fought TKO triumph over South African star Kevin Lerena.
However, Usyk’s confidence will be through the roof as not only is he 20-0 in his professional boxing career.
Usyk is the only man to have ever secured consecutive victories against British superstar Anthony Joshua.
Oleksandr Usyk and Daniel Dubois will scrap for the heavyweight titles on Saturday, August 26.
An official start time is yet to be announced but ring-walks are expected to get underway from approximately 11pm UK time – 10pm local time.
While the undercard action is predicted to start at 7pm UK time.
Tarczynski Arena in Wroclaw, Poland is the chosen venue for this mouthwatering fight and it can host around 45,105 fans.
What TV channel is it on and can it be live streamed?
Oleksandr Usyk vs Daniel Dubois will be broadcast LIVE on TNT Sports in the UK.
TNT Sports will become the new name for BT Sport from Tuesday, July 18.
BT’s consumer chief and chair Marc Allera revealed that there were no plans to change prices but that “it’s impossible to offer guarantees”.
A bundle from BT Sport starts from £18 per month but can rise to £76 for VIP packages.
The huge fight is available to live stream via your mobile or any tablet device where the TNT Sport app can be downloaded.
However, SunSport will have round-by-round coverage of the whole event including the undercard.
What is the undercard?
The undercard for Oleksandr Usyk’s huge fight against Daniel Dubois is yet to be fully revealed.
But keep in touch with SunSport to so who will be on the exciting Poland bill.
What has been said?
Oleksandr Usyk admitted that he is glad to have this tasty fight in Poland and where he achieved his first major success in boxing.
Usyk said: “I am very glad that we have the opportunity to organise my fight in Poland, where I won my first world title seven years ago.
“I want to thank the Polish people who are helping Ukraine so sincerely. Hundreds of thousands of my compatriots have been hosted by this wonderful country.
“Therefore, I hope that my fight will become one more opportunity for Ukrainians and people of Poland to unite and strengthen our friendship.”
Meanwhile, DDD is completely focused on the fight and believes that he will shock the world come August 26.
Dubois said: “Usyk is a great fighter and I do respect him, but it’s my time now.
“I’m going to shock the world and show people how good Daniel Dubois really is.