Players set up a circle with one defender in the middle and one ball per group.
The players on the outside of the circle must pass the ball and try to keep it away from the defender.
The defender stays in the middle until they steal or deflect the ball. When that happens, the pass who threw the pass will become the next defender.
Players cannot pass to the people on either side of themselves.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.