Seeing his dad slumped on the canvas in tears after being knocked out, it could have put Campbell Hatton off boxing forever.
But instead, it simply served to put fire in the belly of Campbell, the son of Mancunian boxing legend Ricky 'The Hitman' Hatton.
And there were again tears in Ricky's eyes as Campbell, now 20, made his ring walk to the strains of Blue Moon to make his professional debut back in March.
Adorning the walls at his uncle and trainer Matthew Hatton's gym in Bredbury, Stockport, are giant posters from some of his dad's biggest fights.
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But there was one night in particular when Campbell says he decided he wanted to follow in his father's footsteps into this sometimes brutal sport.
Its brutality was laid bare when Ricky's comeback at the Manchester Arena in November 2012 ended in a ninth-round stoppage defeat to Vyacheslav Senchenko.
It marked the end of former two weight world champion, and people's favourite Ricky's career.
However, in one way, it also marked the changing of the guard for the family.
As Campbell says, seeing his old man walk out to a feverish atmosphere- in front of 20,000 adoring fans - was what made it to clear to him that it was what he wanted to do as well.
"I never went to the fights as I was too young," Campbell told the Manchester Evening News.
"When my dad had his comeback fight, that was the first fight where I was old enough to know what was going on properly.
"And that's what made me want to start taking it seriously, I think I was about 13/14.
"I had to convince my mum to let me go down to the amateur gym.
"She's seen over the years how hard a game it is. And no one one wants to see family members getting hurt.
"So I think that's what worried her. But we persuaded her and I just loved it ever since."
Ricky, who had Campbell with ex-partner Claire in 2001, has said becoming a father eclipsed all his boxing achievements.
He's also said he never wanted his son to get into boxing.
But 'dad has always got behind me with everything I've done', Campbell says.
"I used to play football for a local team. Rugby as well. I gave everything a bit of a go.
"But I used to go and watch my dad and Matt at the gym from being a baby.
"From being in nappies I was always in the gyms, and I would always have a little bit of a mess around on the bags from there.
"So I've always been around it, and always been interested in it.
"Even when I was training myself. I really enjoyed it, and it took off from there really."
Campbell won a national novice title, alongside a couple of north west titles during his amateur career, in which he recorded 21 wins from 31 fights.
However, he says his surname meant he never had it easy.
"I was probably up against it with a lot of stuff," he says
"Everyone who I boxed they would raise their game.
"Going in against a Hatton it was a little title for them if you like, and they wanted to put a show on.
"So I had to be my best as well."
That's where his uncle, Ricky's brother former European champion and world title challenger Matthew Hatton, who now trains Campbell, came in.
"He was struggling early on," Matt says.
"I was always very wary of getting too involved, as his dad was, and we would leave it to his amateur coaches.
"But he was really putting in the effort, was really working hard.
"I would always see him running near me then I'd go and watch him fight and I would think 'he's not improving as much as he should be'
"And I thought, I'm a boxing coach myself and I'm in a position to help.
"So I said he could have as much or as little of my time as he wanted.
"And I started working with him a lot. Most days to be honest.
"So I've always done the bulk of the work with Campbell.
"We sat down and had a meeting of how was best to move forward and we decided it was for me to train him and Ricky to manage him and so far it's working perfectly."
"We've seen significant improvement in Campbell, over the past two to three years really," Matt added.
"And he's refreshing to train.
"I've been coaching a long time now, it's refreshing - you don't get any excuses, no dramas, he does what you want, when you want him to do it, and he trains hard every single day.
"You think that's the norm for a professional athlete- but I can assure it isn't."
Rather aptly Pat Benatar's 'Hit Me with Your Best Shot' is pumping through the speakers as Campbell is put through his paces.
Matt admits they turned Campbell over into the pro game 'sooner than anticipated' due to the pandemic.
In December last year Campbell, nicknamed 'The Hurricane', signed a mulit-fight promotional deal with Eddie Hearn's Matchroom Boxing.
While Ricky acts as his manager, he is also looked after by Anthony Joshua's management company 258 MGT.
Campbell so far boasts of a record of three wins from his three professional, four-round contests in the Super Featherweight division.
He made his debut on the undercard of Dillian Whyte's heavyweight clash with Alexander Povetkin in Gibraltar in March, where a visibly moved Ricky was caught on cameras as Campbell made his ringwalk, with the Manchester City badge on his shorts and robe, and Blue Moon mashed with Oasis' F****n in the Bushes as his entrance music
And he says the enormity of it also left him feeling weak at the knees.
"I had done my best to stay as calm as I could all week but that's where it sort of hit me," Campbell says.
"When the music kicked in and I could hear people cheering and chanting 'there's only one Campbell Hatton – it was weird.
"It was sort like an electric shock and my legs went a bit like jelly but it was the best feeling ever and I can't wait to do it all again next week."
He will next Saturday face Izan Dura on the undercard of Anthony Joshua's huge heavyweight title defence against Olekdsandr Usyk at the Tottenham Hotspur stadium.
And despite being just a handful of fights into his career, Campbell says he believes he can emulate his dad's achievement of becoming a world champion.
"I think I can go to the very top level" he says.
"I've got no doubt in my mind I'm capable of winning a world title.
"Obviously it's not going to happen overnight and I don't think it's going to come easy.
"I'm going to have to put a lot of work in but I do think I can get there."
Again, he is accepts the pressure his surname will bring as he makes his way in the sport.
"It will add a little bit of pressure because there's expectations no one else will have to deal with.
"Like I said, in the amateurs, everyone raised their game fighting me and it will be the same in the professionals.
"When they know they are in against me, even if its just a matter of digging in a little bit longer to not get stopped and go the distance, I will have it a little bit harder.
"But I think that will make me a better fighter for it."
Dad Ricky's appeal transcended the sport itself, with him packing out Manchester Arena and what is now the Etihad Stadium, as well as taking tens of thousands of fans with him for his two mega fights in Las Vegas against Floyd Mayweather and Manny Pacquiao.
And Campbell believes his similarity to his dad, who once described him as a 'clone of me' means he can carry the flame once again and build a fanbase to match.
"I don't think anyone has ever done what my dad's done," he says.
"And I can't see anyone else doing it.
"But then again I don't see any reason why I can't.
"The same reasons people took to my dad and followed him I hope they will for the same reasons with me.
"Because I'm a similar personality, have a good sense of humour, am down to earth and I'm not an arrogant person. And I think that's what people liked.
"So if I can get a fanbase like his I'll be buzzing."
