Ingemar Johansson and Floyd Pattersson 1959

Muhammad Ali fights Brian London on August 6, 1966

A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several

full-contact Contact sports are sports that emphasize or require physical contact between players. Some sports, such as mixed martial arts, are scored on impacting an opponent, while others, including rugby football, gridiron football and Australian rules foot ...

combat sports, such as boxing,

kickboxing Kickboxing is a combat sports, combat sport focused on kicking and punch (strike), punching. The combat takes place in a boxing ring, normally with boxing gloves, mouthguards, shorts, and bare feet to favour the use of kicks. Kickboxing is pract ...

muay thai Muay Thai ( th, มวยไทย, , ), sometimes referred to as Thai boxing, is a combat sport that uses stand-up striking along with various clinching techniques. This discipline is known as the "art of eight limbs", as it is characterised ...

, mixed martial arts,

karate (; ; Okinawan language, Okinawan pronunciation: ) is a martial arts, martial art developed in the Ryukyu Kingdom. It developed from the Okinawan martial arts, indigenous Ryukyuan martial arts (called , "hand"; ''tii'' in Okinawan) under the ...

, some forms of taekwondo and other sports involving

striking Strike may refer to: People *Strike (surname) Physical confrontation or removal *Strike (attack), attack with an inanimate object or a part of the human body intended to cause harm *Airstrike, military strike by air forces on either a suspected ...

, as well as

fighting Combat ( French for ''fight'') is a purposeful violent conflict meant to physically harm or kill the opposition. Combat may be armed (using weapons) or unarmed ( not using weapons). Combat is sometimes resorted to as a method of self-defense, or ...

-based video games. A full knockout is considered any legal strike or combination thereof that renders an opponent unable to continue fighting. The term is often associated with a sudden traumatic loss of consciousness caused by a physical blow. Single powerful blows to the head (particularly the jawline and temple) can produce a cerebral concussion or a

carotid sinus reflex In human anatomy, the carotid sinus is a dilated area at the base of the internal carotid artery just superior to the bifurcation of the internal carotid and external carotid at the level of the superior border of thyroid cartilage. The carotid ...

with syncope and cause a sudden, dramatic KO. Body blows, particularly the liver punch, can cause progressive, debilitating pain that can also result in a KO. In boxing and kickboxing, a knockout is usually awarded when one participant falls to the canvas and is unable to rise to their feet within a specified period of time, typically because of exhaustion, pain, disorientation, or unconsciousness. For example, if a boxer is knocked down and is unable to continue the fight within a ten-second count, they are counted as having been knocked out and their opponent is awarded the KO victory. In mixed martial arts (MMA) competitions, no time count is given after a knockdown, as the sport allows

submission grappling Submission wrestling, also known as Submission grappling, Submission fighting a form of competition and a general term for martial arts and combat sports that focus on Clinch fighting, clinch and ground fighting with the aim of obtaining a Submis ...

as well as ground and pound. If a fighter loses consciousness ("goes limp") as a result of legal strikes, it is declared a KO. Even if the fighter loses consciousness for a brief moment and wakes up again to continue to fight, the fight is stopped and a KO is declared. As many MMA fights can take place on the mat rather than standing, it is possible to score a KO via ground and pound, a common victory for

grapplers Grappling, in hand-to-hand combat, describes sports that consist of gripping or seizing the opponent. Grappling is used at close range to gain a physical advantage over an opponent, either by imposing a position or causing injury. Grappling i ...

. In fighting games such as '' Street Fighter'' and ''

Tekken is a Japanese Media mix, media franchise centered on a series of fighting game, fighting video and arcade games developed and published by Bandai Namco Entertainment (formerly Namco). The franchise also includes film and print adaptations. The ...

'', a player scores a knockout by fully depleting the opponent's

health bar Health, according to the World Health Organization, is "a state of complete physical, Mental health, mental and social well-being and not merely the absence of disease and infirmity".World Health Organization. (2006)''Constitution of the World H ...

, with the victor being awarded the round. The player who wins the most rounds, either by scoring the most knockouts or by having more vitality remaining when time expires during each round, wins the match. This differs from combat sports in reality, where a knockout ends the match immediately. However, some fighting games aim for a more realistic experience, with titles like '' Fight Night'' adhering to the rules of professional boxing, although technically they are classified as

sports games A sports video game is a video game that simulates the practice of sports. Most sports have been recreated with a game, including team sports, track and field, extreme sports, and combat sports. Some games emphasize actually playing the sport (s ...

, and share many of the same features as

NFL The National Football League (NFL) is a professional American football league that consists of 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The NFL is one of the major ...

and

NBA The National Basketball Association (NBA) is a professional basketball league in North America. The league is composed of 30 teams (29 in the United States and 1 in Canada) and is one of the major professional sports leagues in the United St ...

video games.

Technical knockout

2017-12-02 Roman Hardok - Jakob Jakobi - DSC2359

A technical knockout (TKO or T.K.O.), stoppage, or referee stopped contest (RSC) is declared when the referee decides during a round that a fighter cannot safely continue the match for any reason. Certain sanctioning bodies also allow the official attending physician at ringside to stop the fight as well. In many regions, a TKO is declared when a fighter is knocked down three times in one round. In MMA bouts, the referee may declare a TKO if a fighter cannot intelligently defend themselves while being repeatedly struck.

Double knockout

A double knockout, both in real-life combat sports and in

-based video games, occurs when both fighters trade blows and knock each other out simultaneously and are both unable to continue fighting. In such cases, the match is declared a draw. In fighting games such as '' Street Fighter'', ''

Dead or Alive Dead or Alive most commonly refers to: * Dead or Alive (band), a British pop band * Dead or alive, a phrase on a wanted poster Dead or Alive may also refer to: Film and television * ''Dead or Alive'' (1921 film), an American silent film dir ...

'', and ''

'', a draw is counted as a loss for both players.

Physical characteristics

Little is known as to what exactly causes one to be knocked unconscious, but many agree it is related to trauma to the brain stem. This usually happens when the head rotates sharply, often as a result of a strike. There are three general manifestations of such trauma: * a typical knockout, which results in a sustained (three seconds or more) loss of consciousness (comparable to general anesthesia, in that the recipient emerges and has lost memory of the event). * a "flash" knockout, when a very transient (less than three seconds) loss of consciousness occurs (in the context of a knock-down) and the recipient often maintains awareness and memory of the combat. * a "stunning", a "dazing" or a fighter being "out on his feet", when basic consciousness is maintained (and the fighter never leaves his feet) despite a general loss of awareness and extreme distortions in proprioception, balance, visual fields, and auditory processing. Referees are taught specifically to watch for this state, as it cannot be improved by sheer willpower and usually means the fighter is already concussed and unable to safely defend themselves. A basic principle of boxing and other combat sports is to defend against this vulnerability by keeping both hands raised about the face and the chin tucked in. This may still be ineffective if the opponent punches effectively to the

solar plexus The celiac plexus, also known as the solar plexus because of its radiating nerve fibers, is a complex network of nerves located in the abdomen, near where the celiac trunk, superior mesenteric artery, and renal arteries branch from the abdomin ...

. A fighter who becomes unconscious from a strike with sufficient knockout power is referred to as having been ''knocked out'' or ''KO'd'' (''kay-ohd''). Losing balance without losing consciousness is referred to as being ''knocked down'' ("down but not out"). Repeated blows to the head, regardless of whether they cause loss of consciousness, may in severe cases cause

stroke A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...

s or

paralysis Paralysis (also known as plegia) is a loss of motor function in one or more muscles. Paralysis can also be accompanied by a loss of feeling (sensory loss) in the affected area if there is sensory damage. In the United States, roughly 1 in 50 ...

in the immediacy, and over time have been linked to permanent neurodegenerative diseases such as chronic traumatic encephalopathy ("punch-drunk syndrome"). Because of this, many physicians advise against sports involving knockouts.

Knockdown

A knockdown occurs when a fighter touches the floor of the ring with any part of the body other than the feet following a hit, but is able to rise back up and continue fighting. The term is also used if the fighter is hanging on to the ropes, caught between the ropes, or is hanging over the ropes and is unable to fall to the floor and cannot protect himself. A knockdown triggers a count by the referee (normally to 10); if the fighter fails the count, then the fight is ended as a KO.Boxing Terminology
''Ringside by Gus''. URL last accessed June 17, 2008. A flash knockdown is a knockdown in which the fighter hits the canvas but recovers quickly enough that a count is not started.

Knockout records

Top 10 boxers by most KOs

Billy Bird Billy Bird (1 January 1899 – 6 February 1951) was a British professional boxer who was active from 1920 to 1948 and boxed in the welterweight division. He fought a recorded 356 times in his 28 year-career and was regarded as one of the most a ...

(138) # Archie Moore (132) #

Young Stribling William Lawrence Stribling Jr. (December 26, 1904 – October 3, 1933), known as Young Stribling, was an American professional boxer who fought from Featherweight to Heavyweight from 1921 until 1933. He was the elder brother of fellow boxer Her ...

(129) # Sam Langford (128) #

Buck Smith Buck Smith (born July 22, 1965) is an American professional boxer in the welterweight division. Although Smith has never been considered more than a journeyman fighter, he is one of boxing's all-time knockout kings with 120 KO's. Professional car ...

(120) # Kid Azteca (114) #

George Odwell George Odwell (15 February 1911 – 11 July 1995) was a British professional Boxing, boxer who was active from 1930 to 1945 and boxed in the welterweight division. He fought a recorded 210 times in his 15 year-career and is currently ranked 7th ...

(111) # Sugar Ray Robinson, Alabama Kid (108) # Peter Maher (107) # Sandy Saddler (103)

Top 10 boxing champions (including interims) by KO percentage

Inactive National Boxing Association, World Colored Boxing Championship as well as list on List of current world boxing champions and

European Boxing Union The European Boxing Union (EBU), formerly known as the International Boxing Union (IBU), is a pan-European governing body that sanctions championship bouts in professional boxing. The EBU governs the most-prestigious continental title in Europe, th ...

. # Edwin Valero, Artur Beterbiev (100%) #

Deontay Wilder Deontay Leshun Wilder (; born October 22, 1985) is an American professional boxer. He held the WBC heavyweight title from 2015 to 2020, making 10 successful defenses. By winning the title, Wilder became the first American world heavyweight ch ...

(98%) # Alfonso Zamora (97%) #

Ángel Acosta Ángel Acosta Gómez (born October 8, 1990) is a Puerto Rican professional boxer who held the WBO light flyweight title from 2017 to 2019. As an amateur, Acosta won the gold medal at the 2010 Central American and Caribbean Games. Early life Ac ...

Dmitry Kudryashov Dmitri Alexandrovich Kudryashov (russian: Дмитрий Александрович Кудряшов, born 13 May 1983) is a Russian football coach and a former player. He is an assistant coach with FC Noah. Club career He made his Russian Prem ...

Jonathan Guzmán Jonathan Guzmán Pena (born July 17, 1989), best known as Jonathan Guzmán, is a Dominican professional boxer who held the IBF junior featherweight title in 2016. Professional career Guzmán made his professional debut on December 18, 2011, ...

(96%) # Carlos Zárate Serna,

Wilfredo Gomez Wilfredo is a given name which may refer to: *Wilfredo Alicdan (born 1965), Filipino figurative artist *Wilfredo Alvarado (born 1970), Venezuelan football defender *Willy Caballero (born 1981), Argentine football goalkeeper *Wilfredo Caraballo (bor ...

, Frank Bruno (95%) #

Gervonta Davis Gervonta Davis ( ; born November 7, 1994) is an American professional boxer. He has held multiple world championships in three weight classes, including the WBA (Regular) lightweight title since 2019; the IBF super featherweight title in 2017; ...

Gerald McClellan Gerald Allen McClellan (born October 23, 1967) is an American former professional boxer who competed from 1988 to 1995. He is a two-time middleweight world champion, having held the WBO title from 1991 to 1992, and the WBC title from 1993 to ...

, David Haye (93%) #

Yuniel Dorticos Yuniel Dorticós Pao (born 11 March 1986) is a Cuban professional boxer. He is a two-time former cruiserweight world champion, having held the WBA title from 2017 to 2018 and the IBF title from 2019 to 2020. As of August 2022, he is ranked as t ...

, Gary Mason (92%) #

Anthony Joshua Anthony Oluwafemi Olaseni Joshua (born 15 October 1989) is an English professional boxer. He is a two-time former unified world heavyweight champion, having held the WBA (Super), IBF, WBO, and IBO titles twice between 2016 and 2021. At r ...

, Vitali Klitschko,

In-Chul Baek In-Chul Baek (born December 20, 1961) is a South Korean former professional boxer who competed from 1980 to 1990. He held the WBA super-middleweight title from 1989 to 1990. Boxing career Baek became a professional boxer in 1980. He won the Or ...

(91%) # Aaron Pryor,

Miguel Berchelt Miguel Ángel Berchelt Cervera (born 17 November 1991) is a Mexican professional boxer Professional boxing, or prizefighting, is regulated, sanctioned boxing. Professional boxing bouts are fought for a purse that is divided between the bo ...

George Foreman George Edward Foreman (born January 10, 1949) is an American former professional boxer, entrepreneur, minister and author. In boxing, he was nicknamed "Big George" and competed between 1967 and 1997. He is a two-time world heavyweight champio ...

(89%) # Shannon Briggs,

Khaosai Galaxy Khaosai Galaxy ( th, เขาทราย แกแล็คซี่, born, 15 May 1959) is a Thai former professional boxer who competed between 1980 and 1991. He was also a Muay Thai practitioner. He held the WBA super-flyweight title betwee ...

Gennady Golovkin Gennadiy Gennadyevich Golovkin (Cyrillic: ; also spelled Gennady; born 8 April 1982), often known by his nickname "GGG" or "Triple G", is a Kazakhstani professional boxer. He has held multiple middleweight world championships, and is a two-time ...

, David Benavidez,

Mike Tyson Michael Gerard Tyson (born June 30, 1966) is an American former professional boxer who competed from 1985 to 2005. Nicknamed "Iron Mike" and "Kid Dynamite" in his early career, and later known as "The Baddest Man on the Planet", Tyson is cons ...

, Rocky Marciano (88%)

Top 10 MMA fighters by most KOs

# Travis Fulton (143) # Igor Vovchanchyn (41) # Travis Wiuff (39) # Luís Santos (38) # Joe Riggs (37) # Paul Daley (35) # Gilbert Yvel (34) #

Alexander Shlemenko Alexander Pavlovich Shlemenko (russian: Александр Павлович Шлеменко, born 20 May 1984) is a Russian mixed martial artist currently fighting in the Middleweight (MMA), Middleweight division. He is most notable for fighti ...

(32) #

Mirko Filipovic Mirko Filipović (; born 10 September 1974), better known by his ring name Mirko Cro Cop, is a retired Croatian professional mixed martial artist, kickboxer and amateur boxer. He is mostly known for his time in Pride Fighting Championships. Cro Co ...

(30) # Melvin Manhoef (29)

Top 10 MMA (champions, challengers) fighters by KO percentage

Fighters from inactive

Pride Fighting Championships PRIDE Fighting Championships (Pride or Pride FC, founded as KRS-Pride) was a Japanese mixed martial arts promotion company. Its inaugural event was held at the Tokyo Dome on October 11, 1997. Pride held more than sixty mixed martial arts even ...

and active UFC/

Bellator Bellator, warrior in Latin, may refer to: * Bellator MMA, a mixed martial arts promotion based in the United States * Bishop Bellator of Archaeological site of Sbeitla, Sufetula (5th century) Taxonomy * Bellator (fish), ''Bellator'' (fish), a fis ...

plus champions and former champions from other organizations. # Melvin Manhoef (91%) # Jimi Manuwa (88%) # Conor McGregor, Jiri Prochazka, Cain Velasquez, Yoel Romero, Gilbert Yvel (86%) # Cody Garbrandt, Justin Gaethje (83%) #

Derrick Lewis Derrick James Lewis (born February 7, 1985) is an American professional mixed martial artist. He currently competes in the Heavyweight division in the Ultimate Fighting Championship (UFC), where he currently holds the record for most knockouts ...

(81%) #

, Mauricio Rua (78%) # Wanderlei Silva,

Mark Hunt Mark Richard Hunt (born 23 March 1974) is a New Zealand former mixed martial artist and kickboxer of Samoan descent, currently living in Sydney, Australia. Hunt competed in the Ultimate Fighting Championship (UFC) until 2018 and was the winn ...

, Cristiane Justino (77%) #

Stipe Miocic Stipe Miocic (born August 19, 1982) is an American professional mixed martial artist. He currently competes in the Heavyweight division in the Ultimate Fighting Championship (UFC), where he is a former two-time UFC Heavyweight Champion. Miocic i ...

(76%) # Anthony Johnson, Igor Vovchanchyn (73%) # Junior Dos Santos, Robbie Lawler (71%)

Most consecutive KOs

* Boxing:

LaMar Clark LaMar F. Clark (December 1, 1933 – November 5, 2006) was an American professional boxer who fought in the heavyweight division. He was active from 1958 to 1961 and fought a recorded 46 times in his 3 year-career, mostly in his home state of U ...

(42) Note: Considering Clark's unbeaten run of 44–0 with 44 knockouts, one should take into account he faced limited to no opposition; his first bout with a top-ten ranked opponent, who happened to be Bartolo Soni (12–2–1), ended with a TKO loss for him. Two other notable cases of highly questionable consecutive knockout records in boxing history were Peter McNeeley, running 36–1 with 30 knockouts before facing recently paroled

(41–1–0), and Richie Melito, who built up a record of 18–0 with 17 knockouts and was dubbed the "White Tyson" before

Bert Cooper Bertram Cooper (January 10, 1966 – May 10, 2019), nicknamed Smokin' Bert Cooper, was an American professional boxer who competed between 1984 and 2012. He fought Evander Holyfield, George Foreman, Riddick Bowe, Michael Moorer, Chris Byrd, Ray M ...

(34–17) stopped him. Less notable but nevertheless mentionable cases include Don Steele, running 41–0 with 38 KOs before facing off Brian Nielsen (38–0), and Faruq Saleem, running 38–0 with 32 KOs before he faced casual actor Shawn McLean (3–4–0). * MMA: Travis Fulton (10)

Most 1st round KOs and most consecutive 1st round KOs

* Boxing: Peter Maher (50) * Consecutive/Boxing: Ali Raymi (22) * MMA: Travis Fulton (68) Joe Riggs (26) * Consecutive/MMA: Igor Vovchanchyn, Travis Fulton (7)

Top 10 kickboxers by most KOs

# Changpuek Kiatsongrit (178) #

Frank Lobman Frank "The Animal" Lobman (18 November 1953 – 10 June 2021) was a Surinamese-Dutch kickboxer. He was five times the European kickboxing champion and had an astonishing 90% knockout ratio. He beat many notable fighters over his career, such ...

(100) # Toshio Fujiwara (99) # Andy Souwer (98) # Ramon Dekkers (95) # Badr Hari (92) #

Fabrice Aurieng Fabrice Jean Andre Aurieng (born 7 December 1981 in Sainte-Clotilde) is a French Savate kickboxer. Titles *Kickboxing **Professional **2015 NDC K-1 rules heavyweight +100 kg Champion **2015 ISKA European K-1 Rules Champion **2011 K-1 Kick ...

(89) # Mike Zambidis (86) #

Branko Cikatic Branko (Cyrillic script: Бранко; ) is a South Slavic male given name found in all of the former Yugoslavia. It is related to the names Branimir and Branislav, and the female equivalent is Branka. People named Branko include: * Branko Babić ...

(82) # Peter Aerts (81)

Top 10 Kickboxers (champions, challengers) by KO percentage

K-1, K-2 and Glory champions and Grand-Prix Winners as well as champions from other promotions. # Andrew Thomson,

Kevin Rosier Kevin Rosier (January 6, 1962 – April 14, 2015) was an American kickboxer, boxer and mixed martial artist. He had much success as a kickboxer, winning a number of titles, but did not transition particularly well into the world of boxing and wa ...

(100%) #

Ginty Vrede Ginty Vrede (July 18, 1985 – January 28, 2008) was a Dutch kickboxer and 2008 WBC Muaythai Heavyweight World champion. Biography and career Vrede won the WBC Muaythai heavyweight World title by beating the previously unbeaten Shane del Rosa ...

(95%) # Branko Cikatić (94%) #

Mite Yine Mite Yine ( my, မိုက်ရိုင်း; born April 26, 1992) is a Burmese Lethwei fighter who competes in the World Lethwei Championship's Featherweight division. He is a former Lethwei Golden Belt champion, having won the title in ...

, Dennis Alexio,

Abiral Ghimire Abiral Ghimire (Nepali:अबिरल घिमिरे, born 9 September 1999) also known as Abiral Himalayan Cheetah (アビラル・ヒマラヤンチーター) is a Nepalese kickboxer, currently fighting in the super-welterweight division ...

(93%) # Besim Kabashi,

Alain Ngalani Alain may refer to: People * Alain (given name), common given name, including list of persons and fictional characters with the name * Alain (surname) * "Alain", a pseudonym for cartoonist Daniel Brustlein * Alain, a standard author abbreviation u ...

(92%) #

(91%) # Benny Urquidez, Dustin Jacoby,

Jean-Yves Theriault Jean-Yves is a French masculine given name. Notable persons with that name include: * Jean-Yves André (born 1977), Mauritian footballer * Jean-Yves Anis (born 1980), French footballer * Yves Jean-Bart (born 1947), Haitian football executive * Je ...

(90%) # Nicholas Pettas (89%) #

Alessandro Riguccini Alessandro Riguccini (born 25 March 1988 in Florence, Italy) is an Italian boxer, kickboxer and engineer coached by Mexican trainer Fernando Fernandez. Alessandro Riguccini is undefeated in professional boxing with a record of 28 wins with 24 ...

(88%) #

Zack Mwekassa Zack Mwekassa (born 20 January 1984) is a Congolese boxer and kickboxer who fights in GLORY. He is a former Interim Glory Light Heavyweight Champion As of 1 October 2017, he is ranked the #4 light-heavyweight in the world by CombatPress.com. ...

, Ben Edwards, Badr Hari,

Jean-Claude Leuyer Jean-Claude Leuyer (born November 30, 1970), or simply Jean Claude, is an American former heavyweight kickboxer. He was a six-time world champion, holding titles in four different organizations, and competing in sixteen world title fights. He ho ...

(87%)

Boxing's 50 knockout club (professional boxers with 50 or more knockouts)

138 * Archie Moore 132 *

126 * Sam Langford 126 *

120 * Kid Azteca 114 *

111 * Sugar Ray Robinson 108 * Alabama Kid 108 *

Peter Maher (boxer) Peter Maher (born 16 March 1869, in Gunnode, Tuam, County Galway, Ireland – 22 July 1940 in Baltimore, Maryland) was an Irish boxer known for his powerful punch. Early in his career Maher won the 1888 Middleweight Championship of Ireland, ...

107 * Sandy Saddler 103 * Henry Armstrong 101 * Joe Gans 100 * Jimmy Wilde 98 *

Jorge Castro (boxer) Jorge Fernando "Locomotora" Castro ( es, link=no, locomotive) (born August 18, 1967) is an Argentine boxer and former middleweight champion of the world, who is best known for his second defense of the title against John David Jackson in 1994. E ...

90 * Tiger Jack Fox 89 * Jock McAvoy 88 * Julio César Chávez 86 * Yori Boy Campas 83 * Chalky Wright 83 * Tommy Freeman (boxer), Tommy Freeman 83 * Jose Luis Ramirez 82 * Charles Ledoux 81 * Ted Kid Lewis 80 * Fritzie Zivic 80 * Rubén Olivares 79 * George Godfrey (boxer born 1897), George Godfrey 77 * George Chaney 76 * Torpedo Billy Murphy 76 * Ceferino Garcia 74 * Primo Carnera 72 * Benny Bass 72 * Rodolfo Gonzalez (boxer) 71 * Tommy Ryan 71 * Roberto Durán 70 * Benny Leonard 70 * Jesus Pimentel 68 * Fred Fulton 68 * Earnie Shavers 68 *

68 * Joe Jeanette 68 * Bill Brennan (boxer) 68 * Lou Brouillard 67 * Tommy Gomez 67 * Pedro Carrasco 66 * Billy Petrolle 66 * Marcel Cerdan 66 * Jack Dillon 66 * Lee Savold 65 * Willie Pep 65 * Elmer Ray 64 * George Chuvalo 63 * Carlos Zárate Serna 63 * Frank Moody 63 * Eduardo Lausse 62 * Alexis Argüello 62 * Jack Kid Berg 61 * Barbados Joe Walcott 61 * Larry Gains 61 * Adilson Rodrigues 61 * Mickey Walker (boxer) 60 * Freddie Steele 60 * Ike Williams 60 * Cleveland Williams 60 * Gregorio Peralta 60 * Tami Mauriello 60 * Max Baer (boxer) 59 * Young Peter Jackson (boxer, born 1877), Young Peter Jackson 59 * Carlos Monzon 59 * Joe Knight (boxer) 59 * Ricardo Moreno 59 * Panama Al Brown 59 * Kid Pascualito 59 * James Red Herring 58 * Eric Esch 58 * Tony Galento 57 * John Henry Lewis 57 * Pascual Perez (boxer) 57 * Charley White 57 * Kid Williams 57 * Len Harvey 57 * Jose Luis Castillo 57 * Bob Fitzsimmons 57 * Tiger Flowers 56 * Georges Carpentier 56 * Pedro Montanez 56 * Irish Bob Murphy 56 * Charles Kid McCoy 55 * Dixie Kid 55 * Gorilla Jones 55 * Freddie Mills 55 * Manuel Ortiz (boxer) 54 * Marcel Thil 54 * Solly Krieger 54 * Jose Napoles 54 * Bennie Briscoe 53 * Obie Walker 53 * Peter Kane 53 * Wladimir Klitschko 53 * Shannon Briggs 53 * Eugene Criqui 53 * Joe Louis 52 * Mike McTigue 52 * Philadelphia Jack O'Brien 52 * Lew Jenkins 52 * Marvelous Marvin Hagler, Marvin Hagler 52 * Rocky Graziano 52 * Ezzard Charles 52 * Arturo Godoy 51 * Kid Chocolate 51 * Packey McFarland 51 * Jimmy Slattery 51 * Abe Attell 51 * Miguel Angel Castellini 51 * Jorge Vaca 51 * Jorge Paez 51 * Marco Antonio Rubio 51 * Charley Burley 50 * Jose Legra 50 * Eder Jofre 50

References

External links

KO statistics of Mike Tyson, Wladimir Klitschko, Earnie Shavers, George Foreman and other heavyweight boxers

All famous MMA knockouts

The differences between knockouts and concussions; a simple discussion for beginning boxers
* https://archive.today/20130505222319/http://www.cyberboxingzone.com/cbzforum/showthread.php?1450-Most-Knockouts-Career {{Boxing Martial arts terminology Boxing rules and regulations