Okuriashi harai is a double foot sweep from standing position. To execute the technique, extend the stepping motion of the opponent's leg towards his other leg by using your foot pushing against his foot's instep or side. The sweep is most effective against a retreating opponent and does not work if just one of his feet leaves the ground.
When the opponent attempts rapid lateral movement from a Grappling stance, Tori sweeps Uke legs in the lateral direction in which Uke is moving. Tori executes this sweep at the precise moment when Uke is raised onto his toes, just before the lateral motion begins.
Tori performs the sweep by turning his ankle inward, and then sweeping the arch of his foot against Uke ankle.
If the timing is right and the speed sufficient, the Okuri-ashi-barai (-harai) (Foot sweep) Waza can be used to throw Uke in a dynamic throw which requires little power.
Relatively weak combatants often use this Waza to throw a stronger combatant by waiting for a face-to-face stance and the right timing, and this Waza often results in an upset win.
