| 156 runs | Essex v Surrey | The Brit Oval, Kennington | a18989 |
| 118 runs | Essex v Leicestershire | Grace Road, Leicester | a19031 |
| 117 runs | Durham v Derbyshire | Riverside Ground, Chester-le-Street | a19009 |
| 106 runs | Kent v Essex | The Ford County Ground, Chelmsford | a18992 |
| 100 runs | Derbyshire v Lancashire | County Ground, Derby | a19003 |