Twenty20 Bowling in Each Season by Dieter Klein
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| 2012-13 | (South Africa) | 88 | 0 | 93 | 6 | 3-27 | 15.50 | 0 | 0 | 14.66 | 6.34 |
| 2013-14 | (South Africa) | 24 | 0 | 14 | 0 | | | | | | 3.50 |
| 2014-15 | (South Africa) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2014-15 | (Namibia) | 12 | 0 | 23 | 0 | | | | | | 11.50 |
| 2017 | (England) | 102 | 0 | 144 | 7 | 2-23 | 20.57 | 0 | 0 | 14.57 | 8.47 |
| 2018 | (England) | 24 | 1 | 23 | 2 | 2-23 | 11.50 | 0 | 0 | 12.00 | 5.75 |
| 2019 | (England) | 210 | 1 | 340 | 7 | 2-31 | 48.57 | 0 | 0 | 30.00 | 9.71 |
| 2019-20 | (Spain) | 48 | 0 | 41 | 2 | 1-12 | 20.50 | 0 | 0 | 24.00 | 5.12 |
| 2020 | (England) | 60 | 0 | 66 | 2 | 1-22 | 33.00 | 0 | 0 | 30.00 | 6.60 |
| 2021-22 | (Oman) | 112 | 0 | 137 | 6 | 3-31 | 22.83 | 0 | 0 | 18.66 | 7.33 |
| 2021-22 | (Spain) | 130 | 0 | 127 | 6 | 2-34 | 21.16 | 0 | 0 | 21.66 | 5.86 |
| 2022-23 | (Spain) | 96 | 0 | 90 | 6 | 2-22 | 15.00 | 0 | 0 | 16.00 | 5.62 |
| 2023 | (Netherlands) | 24 | 0 | 22 | 1 | 1-22 | 22.00 | 0 | 0 | 24.00 | 5.50 |
| 2023 | (Scotland) | 118 | 0 | 119 | 7 | 2-18 | 17.00 | 0 | 0 | 16.85 | 6.05 |