Joshua, a two-time heavyweight champ, comes into the fight on a roll. He's stopped his last three opponents: Robert Helenius, Otto Wallin, and Francis Ngannou. Dubois, the newly-elevated world champ, has also been impressive lately. He scored TKO wins over Jarrell Miller and Filip Hrgovic.
Both fighters have something to prove after losing to Oleksandr Usyk, the former undisputed champion. Now, they'll meet in an all-British clash that promises fireworks.
Matty Harris, a 24-year-old heavyweight who's sparred with both men, thinks Joshua will come out on top. In an interview with Pro Boxing Fans, Harris said:
"I think Joshua knocks him spark out within eight rounds."
Harris believes Joshua's experience will be too much for Dubois. He points out that Dubois won't be able to walk Joshua down like he did against Hrgovic. Instead, Dubois will likely be more cautious, which Harris thinks will play into Joshua's hands.
"Dubois doesn't have a good enough defence, he's pretty straightforward," Harris added.
Dubois does have some things going for him. He's got an impressive gas tank and throws a lot of punches - over 50 per round. He's also got raw power and youth on his side.
But Joshua brings his own strengths to the table. He's got more experience and packs a serious punch. His shots tend to be cleaner, too.
It's shaping up to be an exciting fight between two big hitters. Will Joshua's experience win out, or will Dubois' youth and power carry the day? We'll find out on September 21 at Wembley Stadium.