Rising British heavyweight sensation Daniel Dubois recorded the fifth consecutive knockout since beginning his career just five months ago - and this one was the nastiest of the lot.

Paramedics rushed to the ring to tend to his opponent AJ Carter, who was knocked down three times inside 48 seconds, including a finishing blow that saw him fall face-first to the canvas.

It wasn't the fastest finish of Dubois' pro career - he took care of Marcus Kelly in 35 seconds on debut and only needed 40 seconds to dispatch David Howe in his third fight - but it was the most graphic illustration of the power of a man being compared to Mike Tyson.

"He's the hardest-punching heavyweight I've seen for years," said Dubois' promoter Frank Warren after the fight. "I really mean that. You go back to the Mike Tyson days ... that's what he's doing. Every punch he throws ... it's a punch - as they say in the old adage - with bad intentions."

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Boxing analyst Steve Bunch was similarly glowing of Dubois, who is rumoured to have once knocked down heavyweight champion Anthony Joshua in sparring.

"He is the hardest single punch hitter in Britain right now, possibly the world," Bunce said.

Dubois, who only farewelled his teenage years a fortnight before the contest, seemed nonplussed.

"I was very focused and I trained very hard so I expected that of myself," he said.

"I've thrown better (punches) but I'm just trying to improve all the time because whoever they land on will go down.

"I hope he's okay and I hope he recovers ... It was quick and it's better that way when I go out there and do the business in the first round.

"I just want to get it over and done with straight away. As soon as the first bell rings I want to get this fight over and done ... I just go out there and do my job."

The one-sided contest prompted one Twitter user to joke "so that's why my plumber didn't turn up", but Carter - who was once a 6-0 fighter but saw his record fall to 8-4 - at least looked the part.

Warren said he was hoping to find opponents who could provide a little more work, but it wasn't easy.

"He is a puncher. He's a big puncher. He can box as well. He's got a superb jab," Warren said.

"The other guy came to fight ... (but) obviously in that very short space of time it's over.

"Of course I'd like to see him get some rounds under his belt, but we're going to have to find someone with a cast-iron chin."

Dubois was originally hyped as a gold medal contender at the 2020 Olympics in Tokyo, but at the behest of his advisers, went professional this year, simply because he is good enough to do exactly that.

"I would have loved to have represented Great Britain in Tokyo and if the Games had been next year, I wouldn't have had a problem," Dubois told The Sun.

"But I couldn't wait nearly four years. I know I'm going to learn so much more as a professional fighter. By the time 2020 comes around I expect to be world heavyweight champion."