Two competitors per match; Weight classes follow UWW wrestling-style weight categories adapted for grappling (Men: -62, -71, -80, -92, +92 kg); Age categories: Cadet, Junior, Senior, Veteran
Why people argue about this
People often assume that all competitors in a UWW grappling match are of the same age category, which leads to arguments about who should be on the mat at any given time. However, the actual rule specifies different weight categories for each age group, leading to confusion when it comes to determining which competitor is eligible to compete based on both their weight and age.