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Blackmore, who played on a regular basis for Swansea Cricket Club, made just one first-class appearance, in 1934 against Somerset, and while he made 34 runs with the bat, this was to prove to be his only innings in Glamorgan colours.
Ten years later, Blackmore would appear for a West of England XI in a friendly match against Glamorgan.
- David Blackmore at Cricket Archive (subscription required)