Twenty20 Bowling in Each Season by Seth Rance
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| 2009-10 | (New Zealand) | 144 | 0 | 153 | 11 | 4-13 | 13.90 | 1 | 0 | 13.09 | 6.37 |
| 2010-11 | (South Africa) | 48 | 0 | 67 | 1 | 1-30 | 67.00 | 0 | 0 | 48.00 | 8.37 |
| 2010-11 | (New Zealand) | 26 | 0 | 34 | 2 | 1-4 | 17.00 | 0 | 0 | 13.00 | 7.84 |
| 2014-15 | (New Zealand) | 185 | 0 | 210 | 9 | 2-17 | 23.33 | 0 | 0 | 20.55 | 6.81 |
| 2015-16 | (New Zealand) | 186 | 0 | 231 | 12 | 3-17 | 19.25 | 0 | 0 | 15.50 | 7.45 |
| 2016-17 | (New Zealand) | 239 | 0 | 359 | 15 | 4-27 | 23.93 | 1 | 0 | 15.93 | 9.01 |
| 2017-18 | (New Zealand) | 225 | 0 | 311 | 20 | 3-15 | 15.55 | 0 | 0 | 11.25 | 8.29 |
| 2018-19 | (New Zealand) | 197 | 0 | 235 | 10 | 2-19 | 23.50 | 0 | 0 | 19.70 | 7.15 |
| 2018-19 | (United Arab Emirates) | 24 | 0 | 22 | 0 | | | | | | 5.50 |
| 2019 | (Sri Lanka) | 66 | 0 | 120 | 3 | 3-33 | 40.00 | 0 | 0 | 22.00 | 10.90 |
| 2019-20 | (New Zealand) | 138 | 0 | 213 | 4 | 2-49 | 53.25 | 0 | 0 | 34.50 | 9.26 |
| 2021-22 | (New Zealand) | 217 | 0 | 334 | 15 | 5-19 | 22.26 | 0 | 1 | 14.46 | 9.23 |