| 1 run | v Otago Women | Petone Recreation Ground, Lower Hutt | 1998/99 | wa1972 |
| 1 run | v Otago Women | Karori Park, Wellington | 2016/17 | wa8188 |
| 2 runs | v Central Districts Women | Melville Park, Auckland | 1987/88 | wa646 |
| 2 runs | v Northern Districts Women | Lincoln No 3, Lincoln | 2014/15 | wa7334 |
| 3 runs | v Central Districts Women | Colin Maiden Park No 2, Auckland | 1996/97 | wa1681 |
| 3 runs | v Auckland Women | Melville Park, Auckland | 2008/09 | wa4701 |
| 4 runs | v Central Districts Women | Trentham Memorial Park, Upper Hutt | 2006/07 | wa3973 |
| 4 runs | v Canterbury Women | John Davies Oval, Queenstown | 2022/23 | wa10604 |