The 2-1-2 zone defense is one of the simplest and most effective half-court zone defenses.
It is designed to protect your goal against dribble penetration and to force
your opponent to settle for outside shots.
There are many valid reasons to play a zone but at the youth levels, playing a zone should only be
considered after the basics of man-to-man defense are taught and applied.
Once this is done, varying your defensive strategy between man and zone
becomes a very effective way to keep your opponent's offense baffled.