The concept
A defender can only see roughly half the field at once. The blind side is the rest. The article shows how attackers exploit it — receiving on a defender's blind shoulder, timing runs for the moment right after a defender scans, splitting two defenders' reference points with a one-two. It also flips defensively: pressing from a ball-carrier's blind side to rush their decision.
How I teach it
This is a timing and scanning skill, and it is coachable at any age. The cue I give is simple — watch the defender's head. The moment they turn to look at the ball, that is when you move, because for a second you have disappeared. I do not need a special drill for this. I put it inside a normal finishing or crossing game and coach the timing of the run relative to the defender's eyes. The players who get it start scoring goals that look easy, and they are easy, because they arrived unseen.
