First-Class Bowling in Each Season by Jack Cowie
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 1932-33 | (New Zealand) | 24 | 1 | 9 | 0 | | | | |
| 1934-35 | (New Zealand) | 936 | 31 | 357 | 16 | 4-61 | 22.31 | 0 | 0 |
| 1935-36 | (New Zealand) | 1367 | 51 | 522 | 8 | 4-31 | 65.25 | 0 | 0 |
| 1936-37 | (New Zealand) | 1071 | 49 | 313 | 21 | 5-81 | 14.90 | 1 | 0 |
| 1937 | (Ireland) | 72 | 7 | 8 | 6 | 6-3 | 1.33 | 1 | 0 |
| 1937 | (England) | 5089 | 178 | 2267 | 108 | 6-50 | 20.99 | 5 | 1 |
| 1937-38 | (New Zealand) | 851 | 16 | 314 | 18 | 4-55 | 17.44 | 0 | 0 |
| 1937-38 | (Australia) | 488 | 8 | 175 | 9 | 4-76 | 19.44 | 0 | 0 |
| 1938-39 | (New Zealand) | 1200 | 20 | 444 | 21 | 5-60 | 21.14 | 2 | 0 |
| 1939-40 | (New Zealand) | 801 | 15 | 276 | 16 | 6-44 | 17.25 | 1 | 0 |
| 1943-44 | (New Zealand) | 152 | 2 | 52 | 2 | 2-26 | 26.00 | 0 | 0 |
| 1945-46 | (New Zealand) | 1254 | 69 | 433 | 24 | 6-40 | 18.04 | 2 | 0 |
| 1946-47 | (New Zealand) | 1548 | 61 | 578 | 26 | 6-61 | 22.23 | 2 | 0 |
| 1947-48 | (New Zealand) | 731 | 29 | 292 | 12 | 6-94 | 24.33 | 1 | 0 |
| 1948-49 | (New Zealand) | 858 | 32 | 301 | 11 | 4-50 | 27.36 | 0 | 0 |
| 1949 | (England) | 3425 | 117 | 1522 | 53 | 6-54 | 28.71 | 4 | 0 |
| 1949 | (Scotland) | 276 | 12 | 79 | 6 | 6-66 | 13.16 | 1 | 0 |
| 1949-50 | (New Zealand) | 264 | 15 | 59 | 2 | 1-29 | 29.50 | 0 | 0 |