The WBO heavyweight rematch lands at the O2 Arena on Saturday night.
Wardley dropped Dubois twice in May. Dubois still won in round 11.
Both men came in at their career-heaviest weights on Friday in London.
Dubois weighed 18 stone 2 pounds. That is 115 kg.
Wardley weighed 17 stone 10 pounds. That is 112 kg.
Wardley said: Revenge, Fabio Wardley, knockout win.
Dubois said: I will finish it quicker. He added: I have got his number.
The WBO title is on the line. The winner stays in the hunt for bigger fights.
The main card starts at 7 PM BST. Ring walks are set for about 10:30 PM BST.
DAZN Pay-Per-View and DAZN Ultimate show the fight live.
O'Doherty defends his lightweight titles. Jalolov faces Dacres at heavyweight.
Get the weigh-in, the quotes and the full card on Rive News.
Get the full breakdown, key numbers, and what happens next.
Read on Rive News