Twenty20 Bowling in Each Season by Malcolm Waller
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 4wI | 5wI | SRate | Econ |
| 2007-08 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2009 | (Zimbabwe) | 12 | 0 | 19 | 0 | | | | | | 9.50 |
| 2009-10 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2010-11 | (Zimbabwe) | 66 | 0 | 89 | 6 | 3-23 | 14.83 | 0 | 0 | 11.00 | 8.09 |
| 2011-12 | (New Zealand) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2011-12 | (Zimbabwe) | 18 | 0 | 26 | 1 | 1-20 | 26.00 | 0 | 0 | 18.00 | 8.66 |
| 2012 | (Zimbabwe) | 18 | 0 | 14 | 2 | 1-3 | 7.00 | 0 | 0 | 9.00 | 4.66 |
| 2012-13 | (Zimbabwe) | 60 | 0 | 71 | 1 | 1-14 | 71.00 | 0 | 0 | 60.00 | 7.10 |
| 2012-13 | (Sri Lanka) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2012-13 | (West Indies) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2013 | (Zimbabwe) | 6 | 0 | 4 | 0 | | | | | | 4.00 |
| 2015 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2015-16 | (United Arab Emirates) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2015-16 | (India) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2015-16 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2015-16 | (South Africa) | 30 | 0 | 29 | 2 | 2-14 | 14.50 | 0 | 0 | 15.00 | 5.80 |
| 2015-16 | (Bangladesh) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2016 | (Zimbabwe) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2017-18 | (Bangladesh) | 1 | 0 | 6 | 0 | | | | | | 36.00 |
| 2017-18 | (United Arab Emirates) | | 0 | 0 | 0 | | | | | | 0.00 |
| 2018 | (Zimbabwe) | 24 | 0 | 38 | 0 | | | | | | 9.50 |
| 2018-19 | (United Arab Emirates) | | 0 | 0 | 0 | | | | | | 0.00 |