First-Class Bowling in Each Season by Ian Butler
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 2001-02 | (New Zealand) | 1192 | 41 | 706 | 26 | 4-46 | 27.15 | 0 | 0 |
| 2002 | (West Indies) | 276 | 6 | 167 | 5 | 3-26 | 33.40 | 0 | 0 |
| 2002-03 | (New Zealand) | 1165 | 44 | 597 | 25 | 5-44 | 23.88 | 1 | 0 |
| 2003 | (England) | 744 | 24 | 478 | 17 | 4-74 | 28.11 | 0 | 0 |
| 2003-04 | (New Zealand) | 1218 | 37 | 707 | 23 | 6-46 | 30.73 | 1 | 0 |
| 2003-04 | (India) | 348 | 14 | 160 | 2 | 1-32 | 80.00 | 0 | 0 |
| 2004 | (England) | 609 | 11 | 446 | 11 | 4-114 | 40.54 | 0 | 0 |
| 2004-05 | (New Zealand) | 162 | 5 | 141 | 1 | 1-39 | 141.00 | 0 | 0 |
| 2004-05 | (Australia) | 120 | 3 | 61 | 3 | 3-51 | 20.33 | 0 | 0 |
| 2004-05 | (Bangladesh) | 96 | 4 | 42 | 0 | | | | |
| 2008-09 | (New Zealand) | 576 | 19 | 304 | 7 | 2-19 | 43.42 | 0 | 0 |
| 2009-10 | (New Zealand) | 365 | 16 | 180 | 6 | 2-18 | 30.00 | 0 | 0 |
| 2010-11 | (New Zealand) | 1047 | 29 | 604 | 18 | 3-7 | 33.55 | 0 | 0 |
| 2011-12 | (New Zealand) | 984 | 35 | 498 | 17 | 4-62 | 29.29 | 0 | 0 |
| 2012-13 | (New Zealand) | 1752 | 61 | 980 | 39 | 6-65 | 25.12 | 2 | 1 |
| 2013-14 | (New Zealand) | 84 | 1 | 65 | 0 | | | | |
| 2014 | (England) | 306 | 11 | 179 | 4 | 4-41 | 44.75 | 0 | 0 |