Ashi-garami
(leg entanglement)
"From a standard right handed grip Tori steps in with his left foot and falls back onto his back. Tori then brings his right foot to Uke's abdomen. (as if for tomoe-nage) As Tori does so, Uke takes a step to Tori's right with his right foot. Tori retains his hold on Uke's jacket and his foot in Uke's stomach, bringing his left leg over Uke's right thigh and under Uke's body to apply the lock."