| 211 runs | Auckland v Central Districts | Eden Park Outer Oval, Auckland | a22521 |
| 156 runs | Canterbury v Central Districts | Hagley Oval, Christchurch | a22544 |
| 128 runs | Auckland v Canterbury | Seddon Park, Hamilton | a22556 |
| 108 runs | Canterbury v Northern Districts | Bay Oval, Mount Maunganui | a22506 |
| 106 runs | Canterbury v Otago | Hagley Oval, Christchurch | a22469 |
| 106 runs | Wellington v Northern Districts | Basin Reserve, Wellington | a22546 |