I started using this drill after 4 months of practice. Before I had done the simple shell drill (box format and diamond format – 2-2 and 1-2-1) and my players had progressed a lot on defense, so much that I hadn’t lost a game and I felt we could make it better. I decided to introduce double-teaming.
Make it a diamond format (1 guard – 2 forwards – 1 center) 4 on 4 four half court game; have your player’s double team as soon as the ball goes to the forward or the guard dribbles to one wing.
In the first case it is the guard double-teaming and in the second it is the forward coming for the double-team.
Double-team everywhere on the half court except in the point guard position.
Have your players rotating, talking, helping and pressing the ball (not for steals but for pass deflections – because the first gives you a lot of fouls, at least here…)
Defensive Rotation, Help, Aggressiveness, Box Out, Reading and Reacting, etc.
Groups of 4 (at least 2 groups)

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TLC: Pål Degerstrøm 2000-2008