| 1 run | v North Shore Women | Te Whiti Park, Lower Hutt | 1988/89 | wa817 |
| 1 run | v Wellington Women | Hagley Oval, Christchurch | 1995/96 | wa1546 |
| 2 runs | v Wellington Women | Fitzherbert Park, Palmerston North | 1994/95 | wa1448 |
| 2 runs | v Otago Women | Lincoln No 3, Lincoln | 2016/17 | wa8165 |
| 3 runs | v Central Districts Women | Fitzherbert Park, Palmerston North | 2005/06 | wa3610 |
| 5 runs | v Wellington Women | Trentham Memorial Park, Upper Hutt | 2007/08 | wa4316 |
| 6 runs | v Wellington Women | Kelburn Park, Wellington | 1999/00 | wa2187 |
| 7 runs | v Northern Districts Women | Colin Maiden Park, Auckland | 2018/19 | wa8894 |
| 8 runs | v Wellington Women | Barton Oval, Upper Hutt | 2009/10 | wa5097 |
| 10 runs | v Wellington Women | Basin Reserve, Wellington | 2019/20 | wa9360 |
| 10 runs | v Canterbury Women | Eden Park Outer Oval, Auckland | 2020/21 | wa9732 |