(as at 26 October 2025)
- Largest margins of victory and defeat against each county
- Glamorgan winning both at home and away against a county during a season
- Glamorgan losing both at home and away against a county during a season
- Best and worst starts to a season
- Most and fewest victories during a season
- Most matches without defeat and most matches without a victory
- Most consective victories, and defeats, against a single county
- Matches when Glamorgan have enforced the follow-on
- Matches when Glamorgan have been made to follow-on
- Shortest matches (unaffected by rain)
- Most overs bowled by a team in an innings