First-Class Bowling in Each Season by Jacob Duffy
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 2011-12 | (New Zealand) | 108 | 3 | 59 | 2 | 1-17 | 29.50 | 0 | 0 |
| 2012-13 | (New Zealand) | 1066 | 41 | 612 | 12 | 3-35 | 51.00 | 0 | 0 |
| 2013-14 | (New Zealand) | 484 | 20 | 268 | 5 | 3-50 | 53.60 | 0 | 0 |
| 2014-15 | (New Zealand) | 2242 | 104 | 1083 | 45 | 6-83 | 24.06 | 3 | 0 |
| 2015 | (England) | 114 | 4 | 75 | 1 | 1-36 | 75.00 | 0 | 0 |
| 2015-16 | (New Zealand) | 2029 | 70 | 1152 | 25 | 5-96 | 46.08 | 1 | 0 |
| 2016-17 | (New Zealand) | 966 | 35 | 462 | 9 | 3-21 | 51.33 | 0 | 0 |
| 2017-18 | (New Zealand) | 1338 | 56 | 685 | 29 | 5-29 | 23.62 | 3 | 0 |
| 2018-19 | (New Zealand) | 1559 | 57 | 796 | 17 | 3-63 | 46.82 | 0 | 0 |
| 2019-20 | (New Zealand) | 980 | 39 | 539 | 24 | 7-89 | 22.45 | 1 | 0 |
| 2020-21 | (New Zealand) | 1266 | 58 | 564 | 28 | 4-47 | 20.14 | 0 | 0 |
| 2021-22 | (New Zealand) | 1470 | 63 | 713 | 13 | 4-106 | 54.84 | 0 | 0 |
| 2022 | (England) | 372 | 4 | 320 | 8 | 5-66 | 40.00 | 1 | 0 |
| 2022-23 | (New Zealand) | 1937 | 71 | 1029 | 32 | 7-107 | 32.15 | 2 | 0 |
| 2022-23 | (India) | 508 | 20 | 254 | 5 | 2-55 | 50.80 | 0 | 0 |
| 2023-24 | (New Zealand) | 1600 | 55 | 757 | 31 | 6-89 | 24.41 | 1 | 0 |
| 2023-24 | (Australia) | 375 | 10 | 199 | 7 | 2-46 | 28.42 | 0 | 0 |
| 2024 | (England) | 288 | 5 | 194 | 6 | 4-60 | 32.33 | 0 | 0 |