In 2009, Dillian Whyte knocked down Anthony Joshua with a bit of a wild left-right combination in the second round and went on to win a three-round decision in an amateur bout that showed just how raw they both were.
It's now six years later and they are both more polished as professionals, although both have a lot of work to do. Joshua, however, is widely regarded as boxing's No. 1 heavyweight prospect after winning the 2012 Olympic super heavyweight gold medal and blowing away all 14 of his pro opponents, including some decent opponents, inside three rounds.
But that one contest -- only Joshua's third amateur bout -- is the biggest reason why there is so much interest in their pro rematch, which will take place on Saturday (Sky Boxing Office pay-per-view in the United Kingdom) at the O2 in London in the main event of a loaded Matchroom Boxing card.
Whyte (16-0, 13 KOs) has spent most of the promotion of the fight trying to get under the skin of the 26-year-old Joshua (14-0, 14 KOs) by constantly reminding him about the fact that he already beat him once and how he plans to do it again in their fight for Joshua's Commonwealth title and the vacant British title.
But Joshua said he will not allow Whyte's taunting about what happened in their amateur fight take his focus off the business at hand on Saturday.
"He's trying to get me to take my eye off the ball and abandon my game plan, just go in and swing wildly," Joshua said. "I know that and it's not going to affect me. He's a good fighter. This could be the fight that I am taken past two or three rounds, which is what I've been doing so far, so I have trained for a long fight. I am looking to box clever, pick my shots and break him down.
"There's only so many clean shots you can take at heavyweight. I think he's capable of taking me past three rounds, but that will be the achievement he takes from the fight. He'll be the man that took me past three rounds."
Joshua, 27, may have lost to Whyte as an amateur but has roared past him in terms of his professional profile and potential. He said what happened in 2009 means nothing now.
"With or without the amateur win we'd be here," Joshua said. "It has given him belief and something that he can say he has over me, and mentally he's living off that. When I turned pro, Lennox Lewis said to me, 'Forget what you did as an amateur, you are a pro now.' I take that attitude into this fight. It's come from a true great so I'll take that mentality on board as it's come from a great.
"The closer the fight has come, the quieter he has become. Maybe it's dawned on him what is going to happen. I am locked in the zone when I train so nothing can distract me or stop me. I know that this is a massive fight for me. I'm still going out there with the same attitude and the same intentions, and hopefully finish it in the same style that I have been doing.”