First-Class Batting and Fielding in Each Season by Jack Mills 
| Season |   | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St | 
| 1924-25 | (New Zealand) | 1 | 2 | 0 | 24 | 17   | 12.00 | 0 | 0 | 0 |   | 
| 1925-26 | (New Zealand) | 3 | 6 | 0 | 140 | 59   | 23.33 | 0 | 1 | 0 |   | 
| 1926-27 | (New Zealand) | 4 | 8 | 0 | 287 | 63   | 35.87 | 0 | 2 | 1 |   | 
| 1927 | (England) | 24 | 39 | 6 | 1251 | 152   | 37.90 | 4 | 6 | 10 |   | 
| 1927-28 | (Australia) | 1 | 2 | 0 | 28 | 16   | 14.00 | 0 | 0 | 0 |   | 
| 1927-28 | (New Zealand) | 7 | 12 | 0 | 309 | 89   | 25.75 | 0 | 3 | 3 |   | 
| 1928-29 | (New Zealand) | 3 | 5 | 1 | 230 | 114   | 57.50 | 1 | 1 | 2 |   | 
| 1929-30 | (New Zealand) | 7 | 10 | 0 | 485 | 185   | 48.50 | 3 | 0 | 1 |   | 
| 1930-31 | (New Zealand) | 3 | 6 | 0 | 184 | 66   | 30.66 | 0 | 2 | 1 |   | 
| 1931 | (England) | 27 | 41 | 0 | 1321 | 163   | 32.21 | 3 | 4 | 8 |   | 
| 1931 | (Scotland) | 1 | 2 | 0 | 47 | 41   | 23.50 | 0 | 0 | 2 |   | 
| 1931-32 | (New Zealand) | 2 | 4 | 0 | 74 | 52   | 18.50 | 0 | 1 | 1 |   | 
| 1932-33 | (New Zealand) | 4 | 8 | 1 | 258 | 73   | 36.85 | 0 | 2 | 0 |   | 
| 1933-34 | (New Zealand) | 2 | 3 | 0 | 87 | 46   | 29.00 | 0 | 0 | 0 |   | 
| 1934-35 | (New Zealand) | 2 | 3 | 0 | 158 | 84   | 52.66 | 0 | 2 | 1 |   | 
| 1935-36 | (New Zealand) | 5 | 8 | 0 | 126 | 59   | 15.75 | 0 | 1 | 0 |   | 
| 1937-38 | (New Zealand) | 1 | 2 | 0 | 16 | 12   | 8.00 | 0 | 0 | 0 |   |