Career figures from cricket's earlier decades change occasionally, without announcement. The revisions come from archival work rather than from any new interpretation of the games themselves.
The source documents disagree with each other
For an older match there may be a scorebook, a newspaper scorecard, a club record, and a tour account, and they frequently do not match on individual scores or dismissal modes.
Newspaper cards were typeset at speed from telegraphed copy, and transmission errors were common. A misplaced digit in an individual score propagates into every reference work that copied it.
Reconciling these means deciding which source has priority, which is an editorial judgment. Statistical archives publish their hierarchy, and different archives sometimes reach different totals.
What digitization exposed
Photographing and indexing surviving scorebooks made systematic comparison possible for the first time. Errors that had been invisible because nobody could see two sources at once became findable.
Much of what emerged is small: a run in an individual score, a dismissal recorded as caught rather than stumped, an extra assigned to the wrong category.
The effect on career aggregates is nevertheless real. Averages carried to two decimals move when a career total shifts by a handful of runs across a modest number of innings.
The status question underneath
A second source of change is whether a match counts at all. First-class and international status has been granted, withdrawn and re-granted for various historical fixtures over the years.
When status changes, every performance in that match enters or leaves the affected career records at once. This moves figures far more than any individual scoring correction does.
Decisions of this kind are taken by governing bodies and statistical associations rather than by archivists. They are administrative rulings applied retrospectively to a record that was already published.
Why nobody announces it
There is no mechanism for announcing a correction to a scorecard from a century ago. The archive is updated, and readers encounter the new figure without knowing it changed.
Reference works print what they hold at the time of printing, so older books and current databases disagree permanently. Neither is wrong; they reflect different states of the same research.
Anyone citing a historical aggregate is therefore citing a version. Careful archives note the date of the figure, and that convention is more useful than it looks.
What this implies about the modern record
Contemporary scoring is far better evidenced, with video, electronic capture and signed books all pointing at the same match. Wholesale historical revision of current figures is unlikely.
Status questions have not gone away, though. Newer formats and competitions periodically have their classification reconsidered, and the same retrospective movement of records follows.
The record is best understood as a maintained document rather than a fixed one. It describes the past accurately only to the extent that someone is still checking it.

