Research desk
Original statistical studies with visible methodology, source links and clearly defined limitations.
2 Sep 2026 · Erling Haaland · Scoring · Season analysis
A bounded look at Erling Haaland’s league and Champions League records across two seasons—and what the totals cannot prove.
Read article2 Sep 2026 · Kylian Mbappé · Real Madrid · Season analysis
League output and Champions League output moved in different directions in FootIndex’s first two Real Madrid season rows.
Read article2 Sep 2026 · Player comparison · Filters · Data literacy
The same audited dataset supports different leaders by season and competition, so a comparison needs a question before it needs a winner.
Read article2 Sep 2026 · Champions League · Sample size · Scoring rates
Two competitions can produce sharply different rates because their schedules, samples and opponent mixes answer different questions.
Read article2 Sep 2026 · Data quality · Historical coverage · Verification
Why empty seasons, duplicate competition labels and friendly matches need explicit treatment before a player profile can be trusted.
Read article2 Sep 2026 · Methodology · Scoring · Data literacy
Why starts, substitute appearances, playing time and competition context can change the meaning of a familiar scoring ratio.
Read article1 Sep 2026 · Methodology · Minutes · Finishing
Minutes per goal corrects one problem in appearance-based comparisons, but playing time, penalties and tactical role still shape the result.
Read article31 Aug 2026 · Methodology · Assists · Data providers
Assist totals can differ because the Laws define goals and outcomes, while data companies apply event-assignment rules.
Read article30 Aug 2026 · Expected goals · Methodology · Models
What xG estimates, why models disagree, and how to combine chance quality with actual goals without overstating either measure.
Read article29 Aug 2026 · Trophies · Verification · Methodology
Loans, transfers, eligibility rules and provider scope make honour lists deceptively difficult to verify—and easy to overstate.
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