This way of passing is very effective under cross behind the ball-holder
The ball is held with the shooting hand under the ball with spread fingers and the back of the hand turned against the floor.
The pass is made by pulling the throwing arm backwards and the ball is pressed backwards with the fingers.
The throwing arm continues upwards as if an ordinary throw is performed.
Skilled players are able to make a pass backwards by performing a shooting feint and then turn the wrist around and flick the ball backwards