Test Bowling in Each Season by Hedley Howarth
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 1969 | (England) | 996 | 67 | 313 | 8 | 3-102 | 39.12 | 0 | 0 |
| 1969-70 | (India) | 756 | 46 | 218 | 12 | 5-34 | 18.16 | 1 | 0 |
| 1969-70 | (Pakistan) | 869 | 51 | 323 | 16 | 5-80 | 20.18 | 1 | 0 |
| 1970-71 | (New Zealand) | 408 | 15 | 141 | 5 | 4-46 | 28.20 | 0 | 0 |
| 1971-72 | (West Indies) | 2028 | 100 | 703 | 14 | 3-70 | 50.21 | 0 | 0 |
| 1972-73 | (New Zealand) | 1184 | 35 | 440 | 10 | 4-99 | 44.00 | 0 | 0 |
| 1973 | (England) | 678 | 36 | 230 | 7 | 4-144 | 32.85 | 0 | 0 |
| 1973-74 | (New Zealand) | 680 | 10 | 315 | 5 | 3-83 | 63.00 | 0 | 0 |
| 1974-75 | (New Zealand) | 512 | 14 | 188 | 2 | 1-53 | 94.00 | 0 | 0 |
| 1975-76 | (New Zealand) | 450 | 16 | 160 | 5 | 2-15 | 32.00 | 0 | 0 |
| 1976-77 | (New Zealand) | 272 | 3 | 147 | 2 | 1-37 | 73.50 | 0 | 0 |