Judo is an unarmed modern Japanese martial art, Olympic sport, and the most prominent form of jacket wrestling competed internationally. Judo was created in 1882 by Kanō Jigorō as an eclectic martial art, distinguishing itself from its predecessors due to an emphasis on "randori" instead of "kata" alongside its removal of striking and weapon training elements. Judo rose to prominence for its dominance over established jujutsu schools in tournaments hosted by the Tokyo Metropolitan Police Department, resulting in its adoption as the department's primary martial art. A judo practitioner is called a "judoka", and the judo uniform is called "judogi".
Ariel "Arik" Ze'evi is a retired Israeli dan 6 black belt in Judo. He had a long and successful career competing in half-heavyweight Judo competitions. He is an Olympic bronze medal finalist in the 2004 Summer Olympics Judo 100 kg class in Athens.
Hidehiko Yoshida is a Japanese gold-medalist judoka and retired mixed martial artist. He is a longtime veteran of Japan's PRIDE Fighting Championships, competing in the Middleweight (93kg) and Heavyweight divisions. He won gold at the 1992 Summer Olympic Games at 78 kg. Yoshida also had two famous fights with MMA pioneer Royce Gracie that resulted in a no-contest and a time-limit draw.
Willem "Wim" Ruska was a judoka from the Netherlands. He is the first athlete to win two gold medals in Judo in one Olympics – in the heavyweight and absolute categories in 1972.
The rear naked choke (RNC) is a chokehold in martial arts applied from an opponent's back. The word "naked" in this context suggests that, unlike other strangulation techniques found in jujutsu/judo, this hold does not require the use of a keikogi ("gi") or training uniform.
A triangle choke, or sankaku-jime (三角絞) in judo, is a type of figure-four chokehold that encircles the opponent's neck and one arm with the legs in a configuration similar to the shape of a triangle. Applying pressure using both legs and the opponent's own shoulder, the technique is a type of lateral vascular restraint that constricts the blood flow from the carotid arteries to the brain, potentially resulting in loss of consciousness in seconds when applied correctly. Recent studies have shown that the triangle choke takes an average of 9.5 seconds to render an opponent unconscious from the moment it is properly applied.
Naoya Ogawa is a Japanese Olympic and world champion judoka, retired professional wrestler, and mixed martial artist. He won a total of seven medals at the All-Japan Judo Championships, and set a record of seven medals at the World Judo Championships. Ogawa won the silver medal in the +95 kg judo weight class at the 1992 Summer Olympics.
Yasuhiro Yamashita is a Japanese judoka. He currently works as an instructor or advisor for numerous organizations, including Tokai University, the International Judo Federation, and the All Japan Judo Federation. He retired from competitive judo on 17 June 1985 after a remarkable career where he won five gold medals in international competitions and marked 203 consecutive victories until his retirement where he went undefeated his entire career against non-Japanese wrestlers. He received the Japanese National Prize of Honor on 9 October 1984. He is considered the greatest judoka ever.
Okuri-Eri-Jime (送襟絞) is one of the twelve constriction techniques of Kodokan Judo in the Shime-waza list.
Sode guruma jime (袖車絞め) is a type of Judo chokehold (shime-waza), which compresses the opponent’s trachea or the carotid arteries.
Ivory Coast competed at the 1972 Summer Olympics in Munich, West Germany.
Teddy Pierre-Marie Riner is a French judoka. He has won eleven World Championships gold medals, the first and only judoka to do so, and three Olympic gold medals. He has also won five gold medals at the European Championships. He was a member of the Levallois Sporting Club before joining Paris Saint-Germain in August 2017.
Amel Mekić is a retired Bosnian judoka.
Nourredine Yagoubi is an Algerian judoka.
Travis Stevens is an American judoka and Brazilian jiu-jitsu practitioner who competed in the 2008, 2012, and 2016 Summer Olympics. He competes in the men's half-middleweight (−81 kg) division. On August 9, 2016, Stevens became the third American male judoka to win a silver medal in the Olympics.
Togo competed at the 2012 Summer Olympics in London, held from July 27 to 12 August 2012. This was the nation's ninth appearance at the Olympics, except the 1976 Summer Olympics in Montreal, and the 1980 Summer Olympics in Moscow because of the African and the United States boycott.
Saba Gavashelishvili is a Georgian judoka, who played for the half-middleweight category. He is a two-time Georgian judo champion, and a silver medalist for his division at the 2008 IJF World Cup Series in Prague, Czech Republic.
Sherali Bozorov is a Tajikistani judoka, who played for the half-middleweight category. He won a silver medal for his division at the 2007 Asian Judo Championships in Kuwait City, Kuwait, losing out to South Korea's Kwong Young-Woo.
Kouami N'Dri is an Ivorian sprinter. He competed in the 4 × 100 metres relay at the 1968 Summer Olympics and the 1972 Summer Olympics.
Graeme Spinks is a New Zealand judoka. He competed at the 1984 Summer Olympics and the 1992 Summer Olympics. Spinks is a martial arts trainer in his birth-city Christchurch. He trained New Zealand Police in the use of force in self-defence, and restraint training, including carotid holds which can render a person unconscious within seconds; this choking method is rarely applied by Police.
Togo 
