Wladimir Klitschko claimed would help him beat the British heavyweight in 2017.The two put on a fight for the ages in front of a sold-out Wembley stadium, with the then undefeated Joshua putting his IBF titles on the line.
The vacant WBA and IBO belts were also up for the grabs due to Tyson Fury's exile from the ring.In a dramatic clash where both fighters hit the deck, it was 'AJ' who eventually prevailed when he floored the Ukrainian again in the 11th round.
Prior to that though, the build-up had been an intriguing one with Klitschko, 46, holding up a USB stick in one of his pre-fight press conferences.The man dubbed 'Dr Steelhammer' had claimed the stick contained information that would be key to him beating the champion.
As it turned out, thorough research alone wasn't enough in what proved his final career fight.He did go on to sell the memory stick for £160,000 though, donating the proceeds to charity.
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