List A Bowling in Each Season by Hedley Howarth
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| 1969-70 | (Australia) | 111 | 1 | 48 | 8 | 5-22 | 6.00 | 0 | 1 | 13.87 | 2.59 |
| 1970-71 | (Australia) | 64 | 1 | 28 | 2 | 2-28 | 14.00 | 0 | 0 | 32.00 | 2.62 |
| 1971-72 | (New Zealand) | 128 | 1 | 95 | 3 | 2-31 | 31.66 | 0 | 0 | 42.66 | 4.45 |
| 1971-72 | (West Indies) | 54 | 0 | 36 | 2 | 2-36 | 18.00 | 0 | 0 | 27.00 | 4.00 |
| 1972-73 | (New Zealand) | 184 | 1 | 112 | 9 | 4-33 | 12.44 | 1 | 0 | 20.44 | 3.65 |
| 1973 | (England) | 132 | 4 | 67 | 1 | 1-34 | 67.00 | 0 | 0 | 132.00 | 3.04 |
| 1973-74 | (New Zealand) | 152 | 1 | 102 | 6 | 4-25 | 17.00 | 1 | 0 | 25.33 | 4.02 |
| 1974-75 | (New Zealand) | 112 | 1 | 63 | 3 | 3-35 | 21.00 | 0 | 0 | 37.33 | 3.37 |
| 1974-75 | (Australia) | 128 | 2 | 48 | 4 | 3-24 | 12.00 | 0 | 0 | 32.00 | 2.25 |
| 1975 | (England) | 240 | 5 | 148 | 5 | 3-29 | 29.60 | 0 | 0 | 48.00 | 3.70 |
| 1975-76 | (New Zealand) | 48 | 0 | 48 | 0 | | | | | | 6.00 |
| 1976-77 | (New Zealand) | 168 | 5 | 89 | 2 | 1-22 | 44.50 | 0 | 0 | 84.00 | 3.17 |
| 1977-78 | (New Zealand) | 96 | 1 | 53 | 1 | 1-29 | 53.00 | 0 | 0 | 96.00 | 3.31 |