| 1 run | v Central Districts Women | Village Green, Christchurch | 2001/02 | wa2635 |
| 2 runs | v Wellington Women | Colin Maiden Park No 2, Auckland | 1996/97 | wa1661 |
| 3 runs | v Wellington Women | Village Green, Christchurch | 2001/02 | wa2632 |
| 4 runs | v Wellington Women | Lincoln Green, Lincoln | 2011/12 | wa6068 |
| 6 runs | v Otago Women | MainPower Oval, Rangiora | 2014/15 | wa7311 |
| 7 runs | v Central Districts Women | Fitzherbert Park, Palmerston North | 2000/01 | wa2417 |
| 7 runs | v Northern Districts Women | Hagley Oval, Christchurch | 2017/18 | wa8513 |
| 7 runs | v Otago Women | Hagley Oval, Christchurch | 2021/22 | wa10087 |