Oleksandr Usyk is looking to add another chapter to his incredible life story as he takes on Tyson Fury in a hotly-anticipated rematch bout in Saudi Arabia on Saturday night.

The 37-year-old fighter became the first undisputed heavyweight champion of the world in 25 years when he beat Fury via split decision in their first fight back in May, following on from Lennox Lewis who achieved the same feat back in 1999. That win also meant he was the first undisputed heavyweight champion of the four-belt era.

Despite 'The Gypsy King' vowing to knock him out in the ring this time around, Usyk returns to Riyadh as the favourite to triumph again and would cement his status as the greatest active heavyweight on the planet with a convincing victory tonight.

READ MORE: Oleksandr Usyk's model wife sent him explicit message after fight controversy

READ MORE: Tyson Fury has huge net worth but refuses to leave any money to his seven kids

Over the course of his career, the Ukrainian has been the undisputed champion in both cruiseweight and heavyweight classes - the first boxer to do so since Evander Holyfield in 1990 - while he has also held the IBO title since 2021 and the Ring magazine title since 2022. As an amateur, he also won heavyweight gold medals at the 2011 World Championships and the 2012 Olympics, while he defeated the likes of Anthony Joshua, Tony Bellew, Derek Chisora and Daniel Dubois before beating Fury.

Such a successful career in the ring has meant that Usyk has also banked a huge amount of prize money over the years and he heads into the rematch with Fury with a massive net worth that has risen rapidly and is only set to grow larger.

Before his first fight with then-world champion Joshua in 2021, the Ukrainian fighter was believed to have a net worth of around £4 million. However, after defeating the British star twice, his global profile soared and he went into May's showdown with Fury with an estimated net worth of around £45 million, according to talkSPORT.

Usyk's bank account is set to get a further boost this weekend, with him and Fury reportedly set to split a staggering $189 million (£150 million) purse equally. It comes after the purse for May's fight - believed to be in the region of $150 million (£116 million) was split 70/30 in the Fury's favour, with Usyk accepting the minority share on the condition that the British fighter donated £1 million of his earnings to Ukraine.

While he has made tens of millions over the course of his career, Usyk is not motivated by the money, but rather by his family. He has been married to his wife Yekaterina for 15 years, and they share four children - sons Kyrylo and Mykhalio and daughters Yelizaveta and baby Maria together.

He also finds motivation in his tragic past having lost his father in 2012, just days after he became an Olympic champion. While his dad had watched him become national hero by winning gold, Usyk is haunted by the fact he wasn't there to say goodbye, having not been able to get back to his homeland in time.

The heavyweight star previously revealed his regret at waiting too long to come back home, as he emotionally recalled: "He watched me become Olympic champion, but I didn't make it back in time to show him the gold medal. When I arrived he was already lying in the coffin. I handed him the medal, put it in his dead hand and then left the room.

"Three more days and I would have been leaving but I was waiting for a supercar to arrive. I wanted to bring it with me and show him what a cool car I had. My mother called me at 3am and told me."

He later added: "Sometimes [my dad] comes to me the day before the fight. Sometimes he comes the day before the fight and smiles."

After beating Fury, Usyk dedicated the victory to his dad, as he said: "I miss my father and I said to him 'you live there and I live here, please don't come for me, I love you. For me it is hard when my father comes back to me because I remember all life. I know he is here, maybe sitting out there."

A proud Ukrainian, Usyk followed in the footsteps of his soldier father as he joined his nation's territorial defence battalion after Russia launched an all-out invasion of the country in 2022. While he was ultimately urged by his fellow soldiers to leave and represent his nation in the ring, the boxer witnessed death and destruction during his time on the frontline.

He suffered another tragic loss in the early days of the war, as his friend Oleksiy Dzhunkivskyi, a fellow boxer, was shot dead. Usyk later funded the rebuilding of the property where he was killed.

“In this house, there was a boxing gym of my good friend," he explained. "He and I were in the national team, we went to boxing competitions together. Oleksiy was shot by Russian soldiers right in this hall.”