One Punch. One KO. Moments You’ll Never Forget | Greatest Boxing Knockouts One punch can change everything. From explosive counter shots to devastating right hands and perfectly timed hooks, these are some of the most unforgettable knockout moments featured in boxing. Fighters survived pressure, absorbed punishment, and waited for the opening — then one perfectly placed punch ended the fight. This boxing documentary takes you through a collection of dramatic one-punch and sudden knockout moments involving fighters such as Adonis Stevenson, Julian Jackson, Daniel Dubois, Ryan Garcia, Danny Garcia, David Lemieux, Roman Gonzalez, Nonito Donaire, Shane Mosley, Joe Cordina and more. Some knockouts came early. Others arrived after rounds of punishment, when the fight seemed to be heading in another direction. That is what makes a one-punch KO so unforgettable: everything can change in a fraction of a second. If you love boxing knockouts, devastating punches, legendary KO moments, boxing history, fight highlights, and the most dramatic finishes inside the ring, this documentary is for you. Watch until the end and decide which knockout stands above the rest. Which one-punch KO is your favorite? Tell us in the comments. Subscribe for more boxing documentaries, legendary fights, knockout moments, and stories from inside the ring. #Boxing #BoxingKnockouts #KO #BoxingHistory #FightHighlights