It goes without saying, but boxing is perhaps the most brutal sport ever conceived.
Toe-to-toe, the fighters stand, willing to risk life and limb in the pursuit of glory.
Of course, to be crowned champion, punches need to be thrown and they need to land. However, to make it in the square circle, fighters need to keep their hands up, too.
Fail to do so and you are likely to find your way onto this list.
From those who lasted less than a standard television commercial to those that managed to at least wear a few shots, here are the top ten fastest professional boxing knockouts of all time.
1. Mike Collins vs Pat Brownson – 4 seconds – November 4, 1947 – Minneapolis, Minnesota, USA
2. Phil Williams vs Brandon Burke – 10 seconds – June 15, 2007 – St Paul, Minnesota, USA
3. Al Couture vs Ralph Walton – 10.5 seconds – September 23, 1946 – Lewiston, Maine, USA
4. Daniel Jimenez vs Harald Geier – 17 seconds – September 3, 1994 – Wiener Neustadt, Austria
5. David Tua vs John Ruiz – 19 seconds – March 15, 1996 – Atlantic City, New Jersey, USA
6. Gerald McClellan vs Jay Bell – 20 seconds – August 6, 1993 – Bayamon, Puerto Rico
Chris Eubank vs Reginaldo Dos Santos – 20 seconds – September 22, 1990 – London, UK
8. Bernard Hopkins vs Steve Frank – 24 seconds – January 27, 1996 – Phoenix, Arizona, USA
9. Mike Tyson v Marvis Frazier – 30 seconds – July 26, 1986 – Glen Falls, New York, USA
10. Pongsaklek Wonjongkam vs Daisuke Naito – 34 seconds – April 19, 2002 – Khon Kaen, Thailand
