The half space became jargon before it became useful

A vocabulary borrowed to describe a real spatial idea has hardened into a phrase people use to sound informed.

The pitch gets divided into five vertical channels, two of which sit between the centre and the touchline, and those two are the half spaces. It is a genuinely good piece of description. A player receiving there can see both the near touchline and the far post, can shoot without turning, and sits in the gap between a full back's responsibility and a centre back's. All true.

The trouble is what happened next. The term escaped into general use, and now every diagonal pass gets described as finding the half space regardless of whether anything about the half space mattered to it. It has become a way of narrating that a good thing happened, rather than an explanation of why.

What the concept is actually for is defensive assignment. The reason the half space is valuable is that it falls between two defenders' zones of responsibility, and the moment a defence resolves that ambiguity, by having the full back tuck or the midfielder drop, the space stops being special. So a half space is not a fixed piece of grass. It is a temporary hole in someone's marking scheme, and it exists only until they fix it.

That is why I get suspicious when I hear a coach say his team attacks the half spaces as though it were a plan. Attacking a channel is not a plan. Creating an unanswerable question for two specific defenders is a plan, and it usually involves a runner, an occupier and a passer coordinating so that whichever defender responds leaves something open.

The related overuse is the pitch-control graphic, all shaded polygons showing who owns which territory. Those pictures are informative and they flatten one important thing, which is that space you can reach is not the same as space you can use. A midfielder standing in a large uncontested area with his back to goal and no forward passing option controls a lot of territory and is achieving nothing.

I am not asking anyone to stop using the word. It is better than what we had before, which was mostly a vague gesture at the inside-left position.

Just use it to say something. If the sentence works with the phrase removed, it was doing no work.