| 320-5 | Glamorgan v Suffolk | 2005 | a16610 |
| 290-3 | Hampshire Cricket Board v Suffolk | 1999 | a11902 |
| 284-8 | Suffolk v Hampshire Cricket Board | 1999 | a11902 |
| 270-6 | Derbyshire v Suffolk | 1981 | a3031 |
| 256-5 | Northamptonshire v Suffolk | 1989 | a6115 |
| 254-7 | Suffolk v Herefordshire | 2001 | a13718 |
| 251-9 | Essex v Suffolk | 1993 | a8099 |