The blue attacking player plays a one-two with the central player.
They then run forward to meet the pass.
The defender must be aware of when the pass is coming and be poised, ready to pounce, to snatch away and intercept the pass.
According to the rules of the game you are allowed to touch your opponent so in some cases both players should be prepared for contact.
Try to grab the ball with the hand which is closest to the ball.
If you can't grab the ball then try to push it out of your opponent's hand(s) with a short, fast wrist movement.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.