Chris Eubank Sr is regarded as one of the greatest British super-middleweight boxers ever, having held onto the WBO title for nearly four years.

Having firmly established his own credentials, he never saw himself helping his son to do the same - but now, 20 years after his retirement, Chris Eubank Jr is set for the biggest fight of his career.

Eubank Jr will take on George Groves in the semi-final of the World Boxing Super Series on Saturday evening knowing that the result will largely dictate his legacy in the sport.

The 28-year-old has long cried out for a big fight to help springboard his career, and WBA (Super) super-middleweight champion Groves represents just that.

It does mean, however, that Eubank enters the fight as an underdog, having to make up for his lack of experience at this level against a fighter who has already felt the kind of pressure they'll both be under.

But then the underdog mentality is nothing new for Eubank Jr - he was never even supposed to be a boxer in the first place.

His father, Eubank Sr, hid his career in a conscious decision to keep Jr away from the sport, only for things to backfire slightly.

In an interview with ESPN, both Eubank's detailed exactly how Jr's career came to be - and how his father made sure he was ready for the world of boxing.

"My father made sure I was never exposed to his fighting lifestyle all the way up until I was a young teen," explained Jr. "I never stayed up to watch his fights.

"I guess he would tell my mum, 'make sure they're in bed on the night'. He would never talk about boxing to me, I didn't really know much about what he did."

"When he started, I was going through a divorce at the time and it was better for him to go away and be away from the streets here in Brighton," Eubank Sr explained. "And as I had agreed to him boxing, I told him what he needs to do, which is: 'you're going to go there to Vegas and you're going to learn the hard way.'

"People will push you around and they will intimidate you. There's no better teacher than hardcore experience. They will beat you up. If you go away and do that you may have a chance."

The son's journey to America was done alone as Sr stayed behind - something he maintains helped reinforce the intended message.

"No one watched me [when he was training in America]. I wouldn't say it was intentional [not following his son]. In fact me not being there reinforces 'get on with it'.

"I spoke to Mike Tyson. I said 'Mike, you see him in the gym?' He said yes. 'What do you think?', 'He's good but he likes the girls'.

"When I heard that, he's going to block himself. But the work ethic was ferocious. Non-stop. Obsessional."

Eubank Jr's training in the states clearly went well and helped him become the fighter he is today, but the true test of it all is the big fights like that against Groves.

Everything throughout his career has been building up to a night like this -  now he just has to prove it was worth it.