| 1 runs | Hampshire v Lancashire | The Ageas Bowl, Southampton | tt3783 |
| 3 runs | Surrey v Sussex | The Kia Oval, Kennington | tt3670 |
| 4 runs | Lancashire v Leicestershire | Emirates Old Trafford, Manchester | tt3688 |
| 5 runs | Northamptonshire v Worcestershire | County Ground, New Road, Worcester | tt3736 |
| 6 runs | Yorkshire v Derbyshire | Queen's Park, Chesterfield | tt3709 |
| 8 runs | Worcestershire v Somerset | County Ground, Taunton | tt3715 |
| 8 runs | Kent v Hampshire | The Ageas Bowl, Southampton | tt3733 |
| 8 runs | Hampshire v Middlesex | The Ageas Bowl, Southampton | tt3769 |
| 9 runs | Lancashire v Durham | Emirates Durham International Cricket Ground, Chester-le-Street | tt3654 |
| 9 runs | Kent v Sussex | Spitfire Ground, St Lawrence, Canterbury | tt3744 |
| 10 runs | Surrey v Sussex | The Brighton and Hove Jobs County Ground, Hove | tt3659 |
| 10 runs | Northamptonshire v Somerset | County Ground, Northampton | tt3722 |
| 10 runs | Somerset v Warwickshire | Edgbaston, Birmingham | tt3766 |