Ask what the number measures
Possession describes a share of ball control under a provider’s method. It does not, by itself, describe the quality of chances or where the ball was held. Before using a statistic in an argument, define the measure and ask which parts of the match it leaves out.
Add the scoreline and time
A team protecting a lead may accept less possession; a trailing team may have more of the ball while the opponent protects space. Compare passages with similar match states when possible. A full-match average can hide very different behaviour before and after a goal.
Use a second observation
Pair the number with something you can observe: entries into dangerous areas, pressure on receivers or the types of chances created. Do not simply add another unrelated statistic. The second piece of evidence should help test the explanation you are making about the first.
Keep the conclusion proportionate
A single match is a small sample. A single passage is smaller still. You can describe what happened without claiming a permanent strength or weakness. Distinguish an observation, such as repeated central entries, from an interpretation, such as the midfield being unable to defend transitions.
Put the idea to work.
Illustrative discussion: a team has more possession but spends long periods circulating the ball in its own half. That supports a claim about ball control. It does not establish that it created the better chances.
Take this into your next session
Complete this sentence: this number shows ___, but I still need ___ before judging the performance.
Does this guide predict an outcome?
No. It teaches a way to describe patterns and assess evidence. Outcomes depend on more than the examples here.