First-Class Batting and Fielding in Each Season by Jack Cowie
| Season | | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| 1932-33 | (New Zealand) | 1 | 1 | 1 | 0 | 0* | | 0 | 0 | 0 | |
| 1934-35 | (New Zealand) | 4 | 6 | 3 | 68 | 24* | 22.66 | 0 | 0 | 1 | |
| 1935-36 | (New Zealand) | 6 | 6 | 1 | 53 | 24 | 10.60 | 0 | 0 | 3 | |
| 1936-37 | (New Zealand) | 4 | 4 | 0 | 9 | 4 | 2.25 | 0 | 0 | 1 | |
| 1937 | (England) | 23 | 29 | 8 | 149 | 36 | 7.09 | 0 | 0 | 14 | |
| 1937 | (Ireland) | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | |
| 1937-38 | (New Zealand) | 3 | 4 | 0 | 68 | 54 | 17.00 | 0 | 1 | 0 | |
| 1937-38 | (Australia) | 2 | 4 | 1 | 18 | 11 | 6.00 | 0 | 0 | 0 | |
| 1938-39 | (New Zealand) | 4 | 3 | 0 | 20 | 20 | 6.66 | 0 | 0 | 3 | |
| 1939-40 | (New Zealand) | 3 | 4 | 2 | 31 | 24 | 15.50 | 0 | 0 | 1 | |
| 1943-44 | (New Zealand) | 1 | 1 | 1 | 0 | 0* | | 0 | 0 | 0 | |
| 1945-46 | (New Zealand) | 5 | 8 | 0 | 48 | 24 | 6.00 | 0 | 0 | 2 | |
| 1946-47 | (New Zealand) | 5 | 7 | 2 | 62 | 45 | 12.40 | 0 | 0 | 3 | |
| 1947-48 | (New Zealand) | 2 | 4 | 1 | 48 | 18 | 16.00 | 0 | 0 | 2 | |
| 1948-49 | (New Zealand) | 3 | 3 | 0 | 49 | 33 | 16.33 | 0 | 0 | 1 | |
| 1949 | (England) | 17 | 16 | 8 | 84 | 26* | 10.50 | 0 | 0 | 3 | |
| 1949 | (Scotland) | 1 | 1 | 0 | 47 | 47 | 47.00 | 0 | 0 | 1 | |
| 1949-50 | (New Zealand) | 1 | 2 | 1 | 8 | 8 | 8.00 | 0 | 0 | 0 | |