First-Class Bowling in Each Season by Geoff Howarth
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 1968-69 | (New Zealand) | 128 | 1 | 59 | 1 | 1-17 | 59.00 | 0 | 0 |
| 1971 | (England) | 78 | 5 | 22 | 2 | 2-14 | 11.00 | 0 | 0 |
| 1972 | (England) | 20 | 0 | 14 | 0 | | | | |
| 1972-73 | (New Zealand) | 408 | 12 | 148 | 5 | 3-70 | 29.60 | 0 | 0 |
| 1973 | (England) | 72 | 4 | 22 | 0 | | | | |
| 1973-74 | (New Zealand) | 1215 | 36 | 456 | 24 | 5-32 | 19.00 | 1 | 0 |
| 1974 | (England) | 222 | 7 | 132 | 0 | | | | |
| 1974-75 | (New Zealand) | 793 | 9 | 376 | 6 | 1-23 | 62.66 | 0 | 0 |
| 1975 | (England) | 120 | 6 | 47 | 2 | 2-17 | 23.50 | 0 | 0 |
| 1975-76 | (South Africa) | | 0 | 0 | 0 | | | | |
| 1976 | (England) | 750 | 30 | 380 | 9 | 3-20 | 42.22 | 0 | 0 |
| 1976-77 | (New Zealand) | 287 | 8 | 107 | 6 | 3-34 | 17.83 | 0 | 0 |
| 1976-77 | (Pakistan) | 24 | 0 | 13 | 1 | 1-13 | 13.00 | 0 | 0 |
| 1976-77 | (India) | 48 | 1 | 30 | 0 | | | | |
| 1977 | (England) | 48 | 1 | 35 | 0 | | | | |
| 1977-78 | (Sri Lanka) | | 0 | 0 | 0 | | | | |
| 1977-78 | (New Zealand) | 1233 | 51 | 414 | 18 | 4-43 | 23.00 | 0 | 0 |
| 1978 | (England) | 126 | 5 | 69 | 4 | 2-12 | 17.25 | 0 | 0 |
| 1978-79 | (New Zealand) | 446 | 14 | 217 | 7 | 2-15 | 31.00 | 0 | 0 |
| 1979 | (England) | 120 | 6 | 46 | 1 | 1-19 | 46.00 | 0 | 0 |
| 1979-80 | (New Zealand) | 1110 | 66 | 375 | 15 | 3-40 | 25.00 | 0 | 0 |
| 1980 | (England) | 120 | 2 | 102 | 1 | 1-93 | 102.00 | 0 | 0 |
| 1980-81 | (New Zealand) | 72 | 5 | 24 | 0 | | | | |
| 1980-81 | (Australia) | 6 | 0 | 1 | 0 | | | | |
| 1981 | (England) | 42 | 2 | 24 | 0 | | | | |
| 1981-82 | (New Zealand) | 433 | 24 | 150 | 5 | 2-5 | 30.00 | 0 | 0 |
| 1982 | (England) | 12 | 1 | 3 | 0 | | | | |
| 1982-83 | (New Zealand) | 42 | 2 | 23 | 0 | | | | |
| 1982-83 | (Australia) | 84 | 2 | 51 | 1 | 1-21 | 51.00 | 0 | 0 |
| 1983 | (England) | 102 | 4 | 41 | 1 | 1-36 | 41.00 | 0 | 0 |
| 1983-84 | (New Zealand) | 258 | 5 | 163 | 3 | 3-45 | 54.33 | 0 | 0 |
| 1983-84 | (Sri Lanka) | | 0 | 0 | 0 | | | | |
| 1984 | (England) | 4 | 0 | 2 | 0 | | | | |
| 1984-85 | (New Zealand) | 48 | 1 | 33 | 0 | | | | |
| 1984-85 | (West Indies) | 54 | 5 | 17 | 0 | | | | |
| 1985 | (England) | | 0 | 0 | 0 | | | | |
| 1985-86 | (New Zealand) | | 0 | 0 | 0 | | | | |