Is this a zone defence ?
Trying to clarify this minefield. So I was watching an U10 game recently - the tallest / biggest player - under instructions of the coach was to run back into a goalie (goal defence) under the basket in the keyway position everytime the other team had the ball. The rest of the team seemed to play their player to the best of their ability. One ref was a green shift and the other much older than the playing group. Is this a zone ? - all 5 did not run back and stand around keyway - but the single back certainly thwarted many baskets forcing outside shots that U10s couldn't make and ruled out any open lay ups.