The Milan Derby by Numbers

Two clubs, one ground, and one of the longest running derby records in Europe. Because neither side has a home ground of its own, the series is unusually clean evidence about two clubs of similar standing.

The shared ground

The two clubs have played their home fixtures in the same stadium for the whole modern era, which removes the home-advantage asymmetry that contaminates most long head-to-head records. Neither side travels, neither side's support is outnumbered by geography, and both sets of fans occupy the same stands.

That is a genuine methodological advantage. A series compiled under near-identical conditions for both sides is a cleaner measure of relative quality than one split between two grounds, and it makes this derby one of the more reliable aggregate records available.

The split of results

Several hundred competitive meetings have produced a record with a narrow lead in wins for one club and a substantial share of draws. The margin is small enough that a run of a few seasons changes it, and the ordering of the two clubs on wins has changed hands more than once across the series.

The draw rate is the feature most worth noting. Because the sides have been closely matched for most of the record and because the fixture is a local derby with the attendant caution, draws occupy a larger share of the total than in a typical league fixture. A table that reports only wins understates how even the series is.

The competition classes

The fixture appears in the domestic league, the national cup and, in the modern era, continental club competition, where the two clubs have met in the later stages more than once. The continental meetings are few and are weighted by their importance rather than by their number.

Super-cup and regional meetings add a further small class whose formal status has varied. Including them shifts the totals modestly, and because the leading margin in wins is itself modest, the shift matters. The competition rule belongs in the caption of any table of this fixture.

The era effect

The series spans the pre-war and post-war periods and the modern game, and the football in each is not comparable. Attendance, squad construction, the number of competitions and the general scoring rate have all changed, and a table that aggregates them measures the century alongside the clubs.

The most visible era effect is in the goals. Scoring per meeting has fallen substantially from the early decades, as it has across league football generally, so a goals-per-meeting comparison between eras describes the sport rather than the rivalry.

The goal record

Goals in this fixture are numerous enough to form a reasonable sample, and the distribution is consistent with two well-matched sides in a moderate-scoring league. Extreme scorelines exist but are rare, which is what a long series of balanced matches would predict.

The aggregate is nevertheless an era-weighted figure. Where a reader wants a comparable number, the goals-per-meeting rate is the right statistic and the raw total is not, because the two clubs have played very different numbers of matches per decade across the record.

Reading the series

The useful table reports meetings, wins for each side, draws, goals for each side, the competition class and the date of the check. Those columns describe a balanced series honestly; a single headline total for one club is a selection rather than a description.

This vault re-checks the record annually. The fixture is played at least twice a season in the league alone, so any printed total has a short life, and the honest presentation is as a reading at a stage of the series rather than as a settled record.

Key reference points

• The two clubs share a ground, so the series is free of home-advantage asymmetry.
• Several hundred meetings have produced a narrow lead in wins for one club.
• Draws form a larger share than in a typical league fixture.
• Continental and super-cup meetings are few but disproportionately significant.
• Scoring per meeting has fallen with the general decline in the sport's scoring rate.
• Report the competition class and the check date with every total.

A derby played in one ground by two evenly matched clubs is close to a controlled experiment, and the draw column is the part of its record that most tables omit.