What the Golmetria Index is
A single number for how strong a club is right now — built from results and expected goals.
The Golmetria Index (the Índice) is our rating: a way to summarise, in a single number, how strong a club is right now — not just on paper.
What goes into it
The Índice is an Elo-style rating. Every club starts near a common average (we set 1500 as the average club), and after each match the two teams' numbers move toward the result — one up, the other down by the same amount.
Two things decide how much they move:
- Results and expected goals (xG), blended. We measure how a club performed mostly by xG and partly by the goals themselves. xG strips out finishing luck and goalkeeping variance, so it often describes a match better than the scoreline — a side that "won the xG" but lost 1–0 still earns credit.
- How surprising the result was. Beating a much stronger side moves your rating more than beating a weaker one; a routine win barely nudges it. Bigger margins count for a little more, but with diminishing weight — a 4–1 is not twice a 2–1.
That's the core. (The full machinery — match-importance weights, home advantage, and what's still on the roadmap — is in the methodology.)
What the index is — and isn't
The Índice is a starting point for analysis, not a crystal ball. It is probabilistic: it estimates what is likely, not what is certain. It does not predict a specific result, does not replace watching the match, and is not a betting recommendation. A club with a high Índice can still lose — which is precisely why a market exists.
How to read it
Read the rank more than the raw number — it's more intuitive and more robust. Use it to spot mismatches: a club whose underlying performances are rising faster than its reputation may be underrated, and the reverse happens too. The useful question is never "who is better" but "where might the market be mis-sizing the gap".
Use the Índice as a starting point, never as a certainty — for adults 18+, and always bet responsibly.