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Guides / Understanding data coverage and limits
Using FootySphere

Understanding data coverage and limits

Know when a historical comparison is complete and when the available records only tell part of the story.

By FootySphere · Published 22 September 2026 · Updated 22 September 2026

Start with this question

who has the most goals before 1944?
View this result →

What to look for

The question says before 1944, while the scope note says goals are recorded since 1912. Keep both limits with the answer. A leaderboard drawn from those records cannot establish what happened in unrecorded earlier games.

A saved excerpt of this result appears below, with its scope and a link to the full answer.

Statistics do not all start in the same year

Older match records do not contain every measure collected today. The Data & Glossary page lists statistics and their recording periods. Check it before comparing players from different eras or asking for an all-time leader in a newer measure.

A player whose career began before a statistic was recorded may only have part of their career represented. Calling that figure a complete career total would hide the missing years. A comparison over the same covered seasons is easier to interpret.

Example result

who has the most goals before 1944?

The top player for total goals is Gordon Coventry with 1,299 goals.

Excerpt from who has the most goals before 1944?
#GoalsPlayerTeamYearsGames
11299Gordon CoventryCOL1920-1937306
2970Jack TitusRIC1926-1943294
3735Bill MohrSTK1929-1941195

3 rows shown from the saved result. Captured 22 September 2026.

What games were included?
  • Recorded regular-season and finals games before 1944.
  • Results are sorted by total Goals, highest first.
  • Goals: recorded since 1912.

The question says before 1944, while the scope note says goals are recorded since 1912. Keep both limits with the answer. A leaderboard drawn from those records cannot establish what happened in unrecorded earlier games.

Open the full result →

Zero and unavailable are different

A recorded zero means no events were counted for that measure in the covered entry. Unavailable data means the value is missing or was not recorded. You cannot safely replace the second with the first.

This matters for averages as well as totals. Missing values can change which appearances contribute to a calculation. Read any coverage notes and included-game explanation before assuming every career appearance contributed.

Keep season and finals scope explicit

A year identifies the season, but you should still check whether your answer includes finals. Ask for “regular season” or “finals” if you need one stage. A finals record and a full-season record should not be compared as if they cover the same matches.

The current season is still a moving sample while matches remain to be played or records are being updated. Use the returned dates and included matches to understand what is available. An unfinished season total is not comparable with a completed season without that context.

Quarter records need their own check

Having a whole-game statistic does not guarantee the same statistic is available for each quarter. When you ask about a quarter, half or scoring sequence, check that the result covers the requested period.

If a detailed question returns nothing, try a whole-game question for the same player and season. A successful broader search can help you separate a missing split from a player or season that is absent altogether.

Choose a period both players actually share

Imagine comparing two players whose careers began in different decades using a statistic introduced partway through the older player’s career. Even if both have a returned total, the older player’s early seasons may contribute nothing because those values were not recorded.

First check the statistic’s recording period in the glossary. Then choose a season range within that coverage and confirm that both players appeared in it. This narrows the question, but makes it clearer what the figures can support. If there is no suitable shared period, keep the coverage difference visible instead of treating the totals as equivalent.

The same check applies within a season when some matches or detailed splits are unavailable. The important question is not just whether a number is displayed, but which records supplied it. Use the result’s scope notes and match list together.

Report a specific discrepancy

Use Contact when you find a value that appears wrong. Include the question, player or team, season and match where possible. If you have a source for the correction, include its link and explain which value differs. That gives the issue a clear starting point.

Check detailed and fantasy statistics separately

FootySphere includes more than goals, marks and disposals. Available profile filters include pressure acts, score involvements, centre bounce attendances, kick-ins, intercepts and ruck measures, as well as SuperCoach and Dream Team points. These measures describe different aspects of a performance and do not all cover the same years.

Fantasy points are scoring-system outputs. They are not another name for disposals or a direct count of actions. Likewise, a percentage is different from the underlying count: centre bounce attendance percentage and the number of attendances answer different questions. Check the definition and recording period for the exact column you are using.

Understand changing and saved results

Recent matches can gain detail or receive corrections after the first records appear. Live scores, team sheets and completed player statistics may not all be available at the same moment. When comparing a live page with a final match record, check the match status and the update information shown.

The guide previews are dated snapshots used to explain a calculation. They do not refresh each time a match is played. Questions using this year, last season or the latest game can also refer to a different period when revisited. Use an explicit year for a repeatable comparison, and open the full result when you need the current records rather than the teaching example.

Try a related question

  • Top 20 players in clangers since 2015 ↗
  • How many points did Luke Breust produce in third quarters? ↗

Check statistic definitions and recording periods in Data & Glossary. Found something wrong? Tell us what you found.

In this guide

Start with this question Statistics do not all start in the same yearZero and unavailable are differentKeep season and finals scope explicitQuarter records need their own checkChoose a period both players actually shareReport a specific discrepancyCheck detailed and fantasy statistics separatelyUnderstand changing and saved results Try a related question

Read next

How to read a FootySphere result →How to compare players fairly →

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