At the Tokyo Olympics in 1964, where men's judo was recognized as an official Olympic event. Medals were awarded to competitors in various weight divisions, and Japanese competitors swept the gold in all except the open division, where a non-Japanese champion was crowned. This was a sign that judo had already taken root in countries outside Japan. Women's judo was introduced as a demonstration event at the 1988 Seoul Olympics and was added to the official program at the Barcelona Olympics in 1992