| 1 | 95 | MK Fosh & GA Gooch | Essex v Glamorgan | 1977 | a2015 |
| 2 | 56 | GA Gooch & KS McEwan | Essex v Glamorgan | 1977 | a2015 |
| 3 | 23 | Essex v Glamorgan | 1977 | a2015 | |
| 4 | 135 | Glamorgan v Warwickshire | 1989 | a6196 | |
| 5 | 116* | Warwickshire v Glamorgan | 1989 | a6196 | |
| 6 | 11 | Glamorgan v Essex | 1977 | a2015 | |
| 7 | 18 | Glamorgan v Essex | 1977 | a2015 | |
| 8 | 2* | Glamorgan v Essex | 1977 | a2015 |