Since Doug Rogers' success at the 1964 Olympics, Canada has sent at least five and as many as fourteen judoka to every World Judo Championships and Summer Olympics, except for 1968 when judo was not included in the Olympics, and 1980 when Canada boycotted the Moscow Olympics in protest of the Soviet Union's invasion of Afghanistan (see 'List of Canadian judoka' for the names of everyone who has represented Canada at the World Judo Championships and the Olympics, and 'Competition' for medal results). Rogers won bronze at the 1965 World Judo Championships, and some of his Canadian contemporaries won medals at other international tournaments—especially the Pan American Games—but no other Canadian made it to the podium at the highest level again until Kevin Doherty and Phil Takahashi from Ontario won bronze in their respective weight categories at the 1981 World Judo Championships, and Mark Berger from Manitoba won bronze at the 1984 Olympics.Canada's most competitively successful judoka is Nicolas Gill, who won bronze at the 1992 Barcelona Olympics, silver at the 2000 Sydney Olympics, and bronze at three World Championships. Gill was coached by Hiroshi Nakamura, whose Shidokan Judo Club in Montreal served as the National Training Centre until 2014.