This one is a play with a leg throw which is not well assured in grappling. And also, if anyone wants to make the leg throw, they must use force and speed.
Fiore refers to this throw as ‘gambarola’ – leg throw. There are several subtle variations on exactly what he intended the throw to be, but a good interpretation would be the judo throw ‘osoto guruma’ – large outer wheel.
The object of this throw is to cut out both of your opponents legs as you twist them down. Begin from an upper grapple with your right arm over your opponents left shoulder and your left arm under their right. Shuffle your left foot forward slightly so it is level to or just behind your oppnents foot. Swing your right foot through so that it is completely behind your opponent as shown.
With your right ankle, catch your opponents left leg at the achilles tendon and scoop it upward. Straighten your right leg by raising it behind you. Put all your weight onto your left leg and with a straight back, twist forward at the hips. This will push your opponents shoulders backward as well as twist them to your left. Your opponent will roll over your hip and land on their back in front of you. You will be left holding their left arm to control and lock as you choose.
Be sure to move assertively and with constant flow. At the point just before entering the throw, both combatants are at a point of equalibrium. You hold the advantage because you control the movement, but if you hesitate at the point shown in the picture, your opponent can counter by using the same throw against you. This is why Fiore warns us the throw is not assured and must be carried out with speed and force.