Young coach Ben Davison has played a key role in the Englishman Tyson Fury's journey from overweight, depressed and suicidal back to the world top in boxing.

Now the duo goes different ways.

The decision is made just two months before the return meeting against unbeaten WBC champion Deontay Wilder in Las Vegas on February 22.

- Since the questions won't end before there is an answer: Tyson and I both had to make a decision about our careers which resulted in our working relationship ending, but we will continue to be friends, Davison writes on his Twitter.

"Has inspired millions"

Under Davison's leadership, Fury lost about 50 pounds in weight, returned to match form and has gone undefeated for five games since the comeback in the boxing ring in 2018. By then he had been away from the sport for two and a half years.

Later on Sunday, Fury announced in his social media that his new coach will be SugarHill Steward, nephew of legendary boxing coach Emmanuel Steward.

Davison recently wrote in social media about Tyson Fury's mental illness:

- The dark days are behind him now. We succeeded in the ring, but we succeeded in life as well. When everyone doubted and said it was not possible, he came back to become the foremost heavyweight in the world. And along the way, he has inspired millions of people.

ARCHIVE: Fury to SVT: "I want to spread the word about mental ill-health" (September 13, 2019)

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Fury: "I want to spread the word about mental health"

ARCHIVE: Furys coach Ben Davison on Swedish Otto Wallin (September 15, 2019)

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Coach Ben Davison: "Don't underestimate him"