Horns screen action can turn a simple 2-man game into a 3-man action.

The big who sets the screen has two options: they can dive to the basket, looking to capitalize on any gaps created by the defensive coverage, or they can pop out to the perimeter for a potential catch-and-shoot opportunity.

If the screener rolls, the big on the opposite elbow will pop out to the perimeter. If the screener pops, the opposite big will dive toward the basket instead.

This preserves spacing and maintains pressure on the interior defense. Either way, this basic action already creates a three-man read: the roller, the popper, and the ball handler. It gives the offense multiple layers of decision-making right out of the gate.