Youngster, 17, had aspirations of boxing for Wales when tragedy struck in round three of his debut bout.
Nathan Davies, 17, collapsed in the third round and was rushed to hospital.
Teenage boxer Nathan Davies has been left in a wheelchair after suffering brain damage
Nathan Davies collapsed in his first fight in the third round and was rushed to hospital
The youngster, from Porthcawl, Wales, was on a life support machine for two-and-a-half weeks with a bleed on the brain.
But the severe damage means Nathan has lost the use his arms and legs.
Steelworker dad Martin Davies called the ordeal a “worse than a nightmare”.
He said: “No-one knows why he collapsed. He wasn’t badly hit, there’s no underlying health problems but something must have triggered it.
“Seeing your son attached to all those machines, it was a living nightmare.
“Then they showed us his brain scan and our world collapsed.
Nathan Davies, 17, was left without the use of his arms and legs due to the severity of his brain damage
“He started getting movement in his left arm the other day, so we take it one hurdle at a time. And goals like that spur him and us on.”
Nathan sustained no heavy blows but still lost consciousness in his first fight last June, before being rushed to the University Hospital of Wales in Cardiff.
Former WBU middleweight champion Gary Lockett – who was in Nick Blackwell’s corner when he was put into an induced coma following his fight with Chris Eubank Jr last year – has helped raise money for the teen.
British boxer Nick Blackwell was put into an induced coma after fighting Chris Eubank Jr last year
He admitted it was the ex-British titleholder’s near-death experience which prompted him to do all he could for the Davies family.
Welshman Lockett said: “Nathan made his amateur debut aged 16. He had two competitive rounds. But when the ref broke him and his opponent up in the third, Nathan slumped and fell to the ground.
“It turned out he had a blood clot to the brain and he was taken to hospital for an operation.
“He’s got a tough battle ahead, and he’s recovering very slowly. We don’t know how good his recovery will be.”
A JustGiving page set up by Lockett aims to raise £40,000 for the 17-year-old, with around £700 raised so far since it was launched on Sunday.
Nick Blackwell receives treatment during Chris Eubank Jr fight