| 1 | 107 | DL Haynes & MA Roseberry | Middlesex v Northamptonshire | 1990 | f38779 |
| 2 | 206 | A Fordham & RJ Bailey | Northamptonshire v Glamorgan | 1992 | f39992 |
| 3 | 187* | RJ Bailey & AJ Lamb | Northamptonshire v Glamorgan | 1992 | f39992 |
| 4 | 115 | Northamptonshire v Somerset | 1989 | f38160 | |
| 5 | 212 | AJ Lamb & KM Curran | Northamptonshire v Somerset | 1993 | f40572 |
| 6 | 67 | Middlesex v Northamptonshire | 1988 | f37578 | |
| 6 | 67 | RJ Bailey & EAE Baptiste | Northamptonshire v Gloucestershire | 1991 | f39395 |
| 7 | 74 | Northamptonshire v Middlesex | 1988 | f37578 | |
| 8 | 63* | Northamptonshire v Yorkshire | 1994 | f41142 | |
| 9 | 62 | Northamptonshire v Middlesex | 1988 | f37578 | |
| 10 | 41 | Glamorgan v Northamptonshire | 1992 | f39992 |