Women's First-Class Bowling in Each Season by Betty Sinclair
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 1948-49 | (New Zealand) | | 0 | 0 | 0 | | | | |
| 1949-50 | (New Zealand) | 12 | 0 | 3 | 0 | | | | |
| 1950-51 | (New Zealand) | | 0 | 0 | 0 | | | | |
| 1951-52 | (New Zealand) | | 0 | 0 | 0 | | | | |
| 1952-53 | (New Zealand) | 25 | 1 | 10 | 1 | 1-0 | 10.00 | 0 | 0 |
| 1954 | (England) | | 0 | 0 | 0 | | | | |
| 1955-56 | (New Zealand) | 258 | 3 | 141 | 4 | 2-61 | 35.25 | 0 | 0 |
| 1956-57 | (New Zealand) | 66 | 3 | 70 | 7 | 4-? | 23.33 | 0 | 0 |
| 1957-58 | (New Zealand) | 298 | 23 | 98 | 4 | 2-24 | 24.50 | 0 | 0 |
| 1958-59 | (New Zealand) | 410 | 32 | 96 | 8 | 4-10 | 12.00 | 0 | 0 |
| 1959-60 | (New Zealand) | 450 | 18 | 243 | 10 | 4-31 | 24.30 | 0 | 0 |
| 1960-61 | (New Zealand) | 318 | 25 | 129 | 8 | 4-6 | 16.12 | 0 | 0 |
| 1961-62 | (New Zealand) | 384 | 22 | 163 | 2 | 1-30 | 81.50 | 0 | 0 |
| 1962-63 | (New Zealand) | 246 | 22 | 64 | 6 | 3-19 | 10.66 | 0 | 0 |
| 1964-65 | (New Zealand) | 48 | 2 | 35 | 2 | 1-6 | 17.50 | 0 | 0 |
| 1965-66 | (New Zealand) | 120 | 6 | 72 | 2 | 1-4 | 36.00 | 0 | 0 |