Two competitors per match; Weight classes follow JJIF schedule (Men: -56, -62, -69, -77, -85, -94, +94 kg; Women similar consolidation); Age categories: Cadet, Junior, Senior, Veteran
Why people argue about this
People often assume that JJIF allows mixed-gender matches where men compete against women in different weight classes, which they think would create unfair advantages based on gender rather than weight. However, the actual rule specifies separate competitors per match regardless of gender, maintaining fairness by focusing solely on weight categories for each individual participant.