| 120 runs | by Glamorgan | Sophia Gardens, Cardiff | 2024 | tt13983 |
| 83 runs | by Hampshire | The Ageas Bowl, Southampton | 2016 | tt5862 |
| 75 runs | by Hampshire | The Ageas Bowl, Southampton | 2021 | tt9812 |
| 66 runs | by Leicestershire | Grace Road, Leicester | 2005 | tt245 |
| 65 runs | by Essex | Recreation Ground, Bath | 2011 | tt2311 |
| 63 runs | by Sussex | Edgbaston, Birmingham | 2009 | tt1352 |
| 61 runs | by Jamaica | Kensington Oval, Bridgetown | 2010/11 | tt2073 |
| 59 runs | by Kent | County Ground, Taunton | 2010 | tt1873 |
| 57 runs | by Surrey | The Kia Oval, Kennington | 2024 | tt13713 |
| 54 runs | by Worcestershire | County Ground, Taunton | 2012 | tt3028 |
| 52 runs | by Sussex | County Ground, Hove | 2010 | tt1723 |
| 51 runs | by Royal Challengers Bangalore | M Chinnaswamy Stadium, Bangalore | 2011/12 | tt2426 |