Glossary of Judo terminology
Single sleeve & Single collar
The fundamental Kumi-kata (Fighting grips) are the Kenka yotsu (Asymmetrical grips by the two opponents) which include the natural posture right-side grip, the natural posture left-side grip, the right natural posture right-side grip, the left natural posture left-side grip, the "Both sleeves ", the "Both lapels ", etc., and some of these grips can draw a penalty under specific conditions. Single collar and Single sleeve refer to a posture in which a combatant grasps the opponent's lapel and sleeve on the same side (right lapel and right sleeve, or left lapel and left sleeve), or in which he grasps only the lapel, with his pulling hand free. Grasping one lapel in this manner for 6 seconds or longer will draw a penalty. Although the Single collar grip is very advantageous when mounting an attack, it also leaves the attacker in an unstable posture. A well-balanced offense and defense is essential in Judo, and that balance must be kept to 5:5. The Single collar creates an extremely unbalanced 9:1 offense-to-defense condition.
A "Single sleeve" is a posture in which a combatant grasps one of the opponent's sleeves with both hands. This posture will also draw a penalty if the combatant grasps the sleeve for 6 seconds or longer without beginning his attack.