Largest Margin of Runs Defeat
| 105 runs | by Gloucestershire | Uxbridge Cricket Club Ground, Uxbridge | 2011 | tt2278 |
| 79 runs | by Somerset | County Ground, Taunton | 2010 | tt1829 |
| 62 runs | by Kent | Lord's Cricket Ground, St John's Wood | 2009 | tt1236 |
| 59 runs | by Hampshire | The Rose Bowl, Southampton | 2006 | tt376 |
| 58 runs | by Stanford Super Stars | Stanford Cricket Ground, Coolidge | 2008/09 | tt1044 |
| 57 runs | by Surrey | Lord's Cricket Ground, St John's Wood | 2009 | tt1217 |
| 56 runs | by Hampshire | Uxbridge Cricket Club Ground, Uxbridge | 2009 | tt1267 |
| 52 runs | by Kent | The Kent County Cricket Ground, Beckenham | 2006 | tt397 |