Every boxing fan who watched Anthony Joshua from his early days will have known of the fantastic potential he had from his debut bout.
After a fantastic performance at the Olympics, where he won a gold medal in London, he has gone from strength to strength since becoming a professional.
Although even with a solid start, there was still some who thought he may struggle against the dominant forces in the heavyweight division, namely the Klitschkos.
Elder brother Vitaly decided to pursue a career in politics before any potential fight with Joshua could ever be realistic, leaving his younger brother Wladimir stepping up to the plate to face-off against Joshua.
The rest, as the say, is history, with Joshua battling through an extremely tough test from the veteran before coming out on top.
Looking back at undoubtedly the biggest win of his career, Joshua has shared some of what he learned from the former world heavyweight champion, talking in a BBC documentary about the fight called 'Anthony Joshua: The Fight of My Life.'
AJ has reflected upon lessons learned before his upcoming title defence, and has said: "One thing that a coach has never taught me is to take a punch and lie down for 10 seconds and then get back up before the count is over. You’re never taught that.
"He's never come into the gym with a baseball bat and said, 'today we're going to hit you around the jaw 10 times and you're going to lay out and we're going to see if you can get up.
"But what I learnt about myself was character.
"What nobody can train you is who you are deep down. When someone can match you for punch-for-punch and speed-for-speed, it becomes about who you are and how much you want it."
Clearly Joshua has taken massive lessons away from his classic against Wladimir, and is using this as a confidence booster before taking on Carlos Takam.
Joshua will face Takam after the mandatory challenger Kubrat Pulev pulled out due to injury.
With Joshua admitting that Takam is a relative unknown for him after preparing for Pulev, he knows he will need to do a professional job to win the bout and carry on his meteoric rise to the top of the heavyweight division.