DEONTAY WILDER comes out top in this list of boxing's most devastating one-punch knockouts.
Sky Sports have ranked the top 10 most jaw-dropping hammer blows from some of the sport's biggest names.
Manny Pacquiao's left that floored Ricky Hatton? Check. Dillian Whyte's earth-shuddering hook that put Dereck Chisora down? That's in here too.
Relive the 10 best one-punch KOs in this brilliant clip.
10 - Manny Pacquiao vs Ricky Hatton - May 2009
This was named Knockout of the Year by respected Ring magazine.
Pacquiao had already knocked Hatton down twice in the first round when he landed this devastating left - which rendered Hatton unconscious before he even hit the deck - with 10 seconds of the second round left.
9 - Dave Allen vs Nick Webb - July 2018
The White Rhino flattened Webb with a huge overhand right in the fourth round of their bout.
Webb was unbeaten until he was sent crashing through the ropes, eventually being rescued by his corner and the ref.
8 - Wayne Alexander vs Takaloo - September 2004
Croydon star Alexander lifted the World Boxing Union middleweight title after clobbering Takaloo with a massive left hook in the second round.
7 - Ashley Sexton vs Usman Ahmed - January 2010
Sexton landed the English flyweight title with one of the knockouts of the year.
Even more impressively, the mega first-round hit came in what was only Sexton's ninth pro fight.
6 - Callum Smith vs Luke Blackledge - December 2016
Blackledge was on the offensive when Smith landed a whopping left.
The ref rushed immediately to help the stricken Blackledge and put him in the recovery position after the 10th-round KO.
5 - Dmitry Bivol vs Trent Broadhurst - November 2017
Only 400 people were on hand to see Bivol batter Broadhurst with a first-round KO at a casino in Monte Carlo.
Broadhurst was left a bloody mess after the vicious right hand, which saw Bivol retain his WBA light heavyweight title.
4 - Audley Harrison vs Michael Sprott - April 2010
Harrison became European heavyweight champ after this final-round hammer blow.
The Brit was behind on all three scorecards and seemingly heading for the end of his career when he sent Sprott to the floor with a big left.
3 - Dillian Whyte vs Dereck Chisora - December 2018
Brit pair were going toe to toe for 11 brutal rounds before Body Snatcher finished it with a monumental left hook.
Chisora was flat on his back, motionless, after being on the wrong end of the whopping punch.
2 - Carl Froch vs George Groves - May 2014
Ring magazine named Froch's punch in the eighth round of their epic rematch the Knockout of the Year.
Froch originally went for it with a left hook but Groves blocked it with his gloves - only for The Cobra to send him sprawling with a pulverising right hook to the chin.
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1 - Deontay Wilder vs Luis Ortiz - November 2019
He might not be able to get the better of Tyson Fury, but ex-WBC king Wilder is not known as the biggest finisher in boxing for nothing.
Here he displayed all of his customary power with a cataclysmic right flush to Ortiz's face.