# 9. How do we check missing matches in women’s soccer datasets?


**Compare the supplier inventory with an independent, dated list of eligible matches, then test whether delivered records are usable.** Build the denominator around what should have been delivered by the audit cut-off—not the number of records the supplier happens to provide.

Recommended procedure:

1. Define the competition, season and phases included.
2. Establish the official fixture/result inventory.
3. Reconcile postponements, cancellations, duplicate records and renamed teams.
4. Apply the agreed delivery lag to identify matches already due.
5. Match supplier records against that inventory.
6. Inspect footage completeness, line-ups, minutes and required data fields separately.
7. Preserve every exception with its reason and evidence date.

Calculate separate measures:

**Inventory completeness = delivered eligible matches ÷ eligible matches due.**

**Usable coverage = eligible matches passing the task’s checks ÷ eligible matches due.**

**Illustrative example:** if 100 matches are due, 95 appear in the inventory and only 90 pass the required checks, inventory completeness is 95% and usable coverage is 90%. These are different findings.

Maintain separate statuses for:

- Not yet due.
- Delivered late.
- Missing entirely.
- Listed but inaccessible.
- Incomplete footage.
- Missing required fields.
- Identity or synchronisation error.

Hudl itself says Wyscout availability can vary by competition and rights agreement, including temporary unavailability around rights renewals. Your audit should therefore distinguish collection failure, rights restriction and delivery delay. ([hudl.com](https://www.hudl.com/products/wyscout/faq))

A small hand-picked sample can expose failures but should not be presented as a whole-platform completeness estimate. For sampling, include both ordinary matches and deliberately difficult cases, and report those groups separately.