First-Class Bowling in Each Season by Con de Lange
| Season | | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| 1997-98 | (South Africa) | 108 | 4 | 52 | 0 | | | | |
| 1998-99 | (South Africa) | 138 | 2 | 97 | 0 | | | | |
| 2000-01 | (South Africa) | 1104 | 54 | 496 | 7 | 2-44 | 70.85 | 0 | 0 |
| 2001-02 | (South Africa) | 997 | 54 | 332 | 16 | 5-65 | 20.75 | 1 | 0 |
| 2002-03 | (South Africa) | 1345 | 50 | 662 | 8 | 2-41 | 82.75 | 0 | 0 |
| 2003-04 | (South Africa) | 1167 | 40 | 610 | 21 | 7-48 | 29.04 | 2 | 1 |
| 2004-05 | (South Africa) | 1937 | 92 | 839 | 26 | 4-26 | 32.26 | 0 | 0 |
| 2005-06 | (South Africa) | 924 | 44 | 361 | 5 | 1-6 | 72.20 | 0 | 0 |
| 2006-07 | (South Africa) | 1938 | 73 | 828 | 29 | 5-36 | 28.55 | 2 | 0 |
| 2007-08 | (South Africa) | 1380 | 58 | 682 | 17 | 4-72 | 40.11 | 0 | 0 |
| 2008-09 | (South Africa) | 1215 | 39 | 621 | 20 | 4-64 | 31.05 | 0 | 0 |
| 2009-10 | (South Africa) | 2076 | 62 | 1027 | 22 | 3-107 | 46.68 | 0 | 0 |
| 2010-11 | (South Africa) | 294 | 11 | 134 | 4 | 2-19 | 33.50 | 0 | 0 |
| 2012 | (England) | 324 | 11 | 176 | 3 | 1-11 | 58.66 | 0 | 0 |
| 2015 | (Netherlands) | 102 | 3 | 50 | 2 | 2-39 | 25.00 | 0 | 0 |
| 2015 | (Scotland) | 84 | 8 | 21 | 3 | 3-21 | 7.00 | 0 | 0 |
| 2016 | (Scotland) | 48 | 2 | 23 | 0 | | | | |
| 2017 | (Scotland) | 30 | 1 | 16 | 0 | | | | |