How Game State Changes the Meaning of Football Statistics
Serious football fans find themselves nose-deep in statistical analysis of the game on a regular basis, and that’s no bad thing, so long as you understand that static stats have to be reinterpreted depending on the game state. In other words, just because one team goes into a game as the favorite to win, the odds of this outcome can change on the fly as soon as the first goal is scored. So, if you’re only evaluating stats without accounting for how things stand in real time, you’ll draw imperfect conclusions.
The Impact of Tactical Changes
The tactics a team uses mid-game are dynamic and will shift based on the scoreline at any given point in the match. Teams that have secured a lead typically take a more defensive approach to limit the likelihood of the score being leveled by an unchecked counterattack. Teams trailing their rivals will do the opposite, making riskier plays and taking shots more often as they look to level the score with a goal.
Moreover, because teams spend unequal amounts of time in each score state, their aggregate statistics reflect situational incentives as much as raw quality. And what about if you’re interested in live betting? Knowing how tactics might alter over the course of a match as the game state ebbs and flows means you’re in a better position to work out whether a particular bet is worth making, or worth avoiding.
The Illusion of Control
The game state requires you to read football stats with a bit more nuance because some of the most often cited figures aren't that valuable in isolation and need broader context to be informative.
Possession percentages are a good example, because the intuitive idea that a team with a greater share of time on the ball controls a match won’t always be borne out by the end result. Instead, a team with 35% possession could be winning by a goal or two and have adopted a defensive strategy that relies on letting the other side keep the ball while blocking every attacking play and set piece they throw at them.
Similarly, the volume of shots at goal taken has little to do with team skill or quality. A high volume of shots is more likely to come from desperation if the game state is against the side in question. Fewer shots taken, but with more on target, is a more valuable stat to hang predictions on.
The Bigger Picture
Football statistics aren't just extrapolated from the game state in live-play scenarios. You can apply it retroactively to finished matches, but you can only assess the baseline stats with any real precision if you also factor in the scoreline at that moment.
All of this may be too much for the average fan. However, online tools make it much easier to sift through stats and understand their true meaning today, so it’s not beyond the reach of non-experts. And if you’re putting money on the line, there’s even more reason to get stuck into the figures in an informed way.
