Shannon Briggs was left terrified he’d done serious damage to an opponent, after leaving his rival laid out against the bottom rope.
Blessed with a thunderous right hand, the American compiled an astonishing 53 finishes in 60 wins.

Shannon Briggs knocked an opponent out for 15 minutes
Shannon Briggs made a career on his devastating power, with the formidable boxer, capable of rendering unconscious anybody he touched with a single punch.
And that’s what exactly happened to Dicky Ryan, when the New Yorker’s clubbing right detonated on his chin.
When the dynamite shot landed, Briggs was overjoyed, with the victory putting him one step closer to fighting for his second world title.
However, his excitement soon turned to concern when he realized his adversary didn’t get straight back up.
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In an interview with talkSPORT, ‘The Cannon’ said: “I had a few vicious knockouts that I was scared I might have done something horrific to a person.
“One dude I hit, he was sleeping for 15 minutes, but I was scared, I thought something happened to him.
“But it was a pretty one; you should have seen that right hand; I threw it straight like an arrow. Straight down the pipe.
“Look at me, I’m sick, I’m smiling… I hit this boy so hard he is still asleep.
“[His name was] Dicky Ryan, vicious. It was so bad, I was worried.
“I knocked him out, and he was unconscious on the bottom rope.
“His body was twisted, hanging out the ring. But you know it could happen to me, so I’ve got to make sure it happens to them and not me.”
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While the 52-year-old hasn’t competed since scoring a first-round finish over Emilio Zarate in 2016, he still believes he’s got something left to give to the sport.
He exclaimed: “I’m not retired; it’s just that nobody wants to fight me.
“I’m just inactive because they are scared. They’re scared of me, champ. I’m looking to fight in March…
“I was going to beat up David Haye, but he is scared. I saw David Haye at a restaurant last night, and I was going to knock him out, but he was with his son.
“I will fight anybody, I will fight Derek Chisora, but they don’t want to fight me champ.
“I’ve got the most first-round knockouts in boxing history, it is for a reason. They swept me under the rug and said ‘Let’s leave him alone, if we ignore him, he will go away.”
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