Players rally up and down the middle of the court, attempting to get the longest rally they can hitting beyond the service box.
Racquets are placed in the net to force the players to hit with height, which will help them to get the depth they are looking for.
Pairs of players can compete against each other's courts to see which pair gets the longest rally within a certain amount of time.
If the ball lands long, wide, short or in the net the rally must start again.
Players can sometimes start to push the ball too much in this drill. While they are looking for depth and consistency, they must still hit through the ball in order to achieve the depth.
"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.