Oleksandr Usyk is aiming to become one of the few fighters to capture world titles at both cruiserweight and heavyweight.
As a cruiserweight, he cleaned out the entire division. In 2018, Usyk became the undisputed champion when he dominated Murat Gassiev over twelve rounds in the final bout of the World Boxing Super Series cruiserweight tournament.
He moved up to heavyweight in 2019.
On Saturday night at Tottenham Hotspur Stadium, Usyk will look to capture more gold when he challenges WBO, IBF, WBA, IBO champion Anthony Joshua.
During his breakdown of their fight, Joshua indicated that the outcome is going to come down to their respective game plans.
"Anthony is absolutely correct. This will be a fight between two boxing minds, two boxing intellects. The one with more patience, to go through all the pressure in the fight, will take the victory," Usyk told Sky Sports.
Both Usyk and Joshua captured gold in the 2012 Olympic games in London. Usyk won gold at heavyweight, while Joshua was the top man at super heavyweight.
Joshua views their fight as a game of chess.
"Concentration - when you want to [punch], you lock in, then make a move. You have to make sure your brain works. That can be mentally fatiguing so I am sharpening the mind so that I can concentrate for the 12 rounds," Joshua said.
"I've taken so many losses on the chessboard that I had to improve. That's what it taught me. In life, never give up. I played people who were better than me and I have taken so many beatings on this board. I grew to stay committed to the cause, and I got pretty good."
Beyond Joshua, Usyk would want to pursue the final piece of the heavyweight puzzle to become undisputed.
"Of course, it's the same thing into my heart that's left in me [to become undisputed]," Usyk told Sky Sports.
"If it wouldn't be, I wouldn't be doing it."