Anthony Joshua has been told all of his past achievements will prove "irrelevant" if he can not set the record straight by defeating Andy Ruiz Jr in their rematch on Saturday.
On the other hands, his opponent Andy Ruiz weighs in at 283lbs, 15lb heavier than the first fight.
The anticipated title unification rematch takes place a few minutes from now at the Diriyah Arena, Saudi Arabia.
Joshua tipped the scales at 16 stone 13 lbs, cutting fully 10 pounds from when he first fought Ruiz in NY in June.
But Joshua then suffered a similar cut in the second round, above his eye, although he remained poised and unhurt.
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When asked if he was surprised by the almost 50-pound disparity, Joshua said "not really" because Ruiz is a "big lad". The bout was far more memorable than the odds would have suggested, as Ruiz Jr. was able to knock Joshua down four times before the referee had seen enough. Joshua felt it, and the bell came at a good time for him.
Ruiz has put on weight since their first fight in June.
Joshua was the dominant boxer though, and continued to make good contact with his punches over the next five rounds, seeming to win each of them easily.
Ruiz Jr's eyes lit up in the eighth round when he landed hard punches to the side of Joshua's head.
Two scores of 118-110 and another of 119-109 meant the world titles returned to Joshua, who celebrated with his family and embraced Ruiz Jr after the decision.