* Summary:
This Ashi waza (Foot / leg techniques) employs a "destabilize the upper body, reap the lower body" strategy, and is effective in competition.

* Features of this Waza:
The Osoto-gari (Large outer reap) consists of pulling the opponent forward to destabilize him, and then sweeping his leg out from under him like a sickle cutting grass.

* Waza details:
In order to easily pull Uke (Player receiving opponent's attack) forward, Tori (Player executing technique) Tsurite (Lifting hand) grasps Uke (Player receiving opponent's attack) collarbone area, and his Hiki-te (Pulling hand) grasps Uke (Player receiving opponent's attack) sleeve just below Uke (Player receiving opponent's attack) elbow.

Tori (Player executing technique) pulls Uke (Player receiving opponent's attack) toward Tori (Player executing technique) Hiki-te (Pulling hand) side while moving forward toward Uke (Player receiving opponent's attack), and extends his Support leg to the outer side Uke (Player receiving opponent's attack) Tsurite (Lifting hand).

At the same time, Tori (Player executing technique) bends the knee of this Tsurite (Lifting hand) side leg and prepares to move behind Uke (Player receiving opponent's attack).

By Pulling Uke (Player receiving opponent's attack) body snugly against his own at this time, Tori (Player executing technique) tilts Uke (Player receiving opponent's attack) Center of gravity to one side, and the other leg lifts, shifting his body weight to the leg that Tori (Player executing technique) intends to reap.

At moment when Uke (Player receiving opponent's attack) Center of gravity tilts, Tori (Player executing technique) swings his reaping leg around Uke (Player receiving opponent's attack) body-weight supporting leg and reaps it in a sudden back-to-front motion.

The reaped leg swings out behind Tori (Player executing technique), and by continuing to swing the leg upward until the bottom of the foot is facing the ceiling, Tori (Player executing technique) can complete a strong Osoto-gari (Large outer reap) Waza without losing power.

The Osoto-gari (Large outer reap) Waza is both a fundamental and representative Judo Waza.
Although it appears simple, it actually requires proper execution of several fine points, and is therefore difficult.

* Waza usage tip:
Even if Uke (Player receiving opponent's attack) suspects the Osoto-gari (Large outer reap) Waza and effectively defends against it, Tori (Player executing technique) can still catch Uke (Player receiving opponent's attack) knee with his reaping leg and begin hopping on one leg with his Tsurite (Lifting hand) pushing against Uke (Player receiving opponent's attack) jaw in order to destabilize him.