GREEN AND YELLOW BELT
The green and yellow belt is not an official belt rank in Brazilian Jiu Jitsu, instead it is a belt used to differentiate between competitors at tournaments. When two competitors are stepping up to the competition mats, one of them is required to tie the green and yellow belt around their waist over their ranking belt. This is important so that the referee can distinguish between both fighters, and when the referee awards points there is no mix up. Usually the belt is used if two competitors are wearing the same coloured Gi, the belt is not always needed if both competitors have different coloured Gi's on making it easy for the referee to distinguish, but it is at the referee's discretion.