2 players stand on either side of the net. One player overhand passes to their team mate who sets the ball back for a spike down the line.
On the other side of the net, one blocker stands at the net and attempts to cover a cross court shot, while a digger is at the back of the court, and has to attempt to dig the ball either to their team mate or back over the net.
Two players are involved in defense action. They need to work together and cover at least half of their side of the court.
If coach wants to focus on digging mostly, then the blocker can become another receiver at the back of the court, ready to receive and dig a cross court shot.
"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.
As we enter the business end of the competition, we take a look at the remaining eight teams and the key talking points surrounding each side.