The 10 Quickest 'One-and-Done' Punch Knockouts in Boxing History (With Videos)

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The 10 Quickest 'One-and-Done' Punch Knockouts in Boxing History (With Videos)

It's hard to get a one-punch knockout in boxing, but it's even harder to get it in the opening seconds of a bout. The nine boxers on this list do just that, and they make it look easy.

With power and accuracy, they manage to put their opponents on the canvas and sometimes to sleep with one vicious blow.

Featured boxers include Nigel Benn, Mike Tyson, Bernard Hopkins and Gerald McClellan.

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