| Full name: | Jacobus Petrus Duminy |
| Born: | 16th December 1897, Bellville, Cape Province, South Africa |
| Died: | 31st January 1980, Groote Schuur Hospital, Observatory, Cape Town, Cape Province, South Africa |
| Batting: | Left-hand batter |
| Bowling: | Slow left-arm orthodox |
| Education: | University College, Oxford University |
| Teams: | South Africa (Test: 1927/28-1929); Western Province (Main FC: 1919/20); Oxford University (Main FC: 1921); Transvaal (Main FC: 1927/28-1928/29); All teams |
| Lists of matches and more detailed statistics | |
| Test Career Batting and Fielding (1927/28-1929) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| South Africa | 3 | 6 | 0 | 30 | 12 | 5.00 | 0 | 0 | 2 | |
| Test Career Bowling (1927/28-1929) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| South Africa | 60 | 0 | 39 | 1 | 1-17 | 39.00 | 0 | 0 | 60.00 | 3.90 |
| First-Class Career Batting and Fielding (1919/20-1929) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Overall | 13 | 23 | 4 | 557 | 168* | 29.31 | 1 | 3 | 11 | |
| First-Class Career Bowling (1919/20-1929) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Overall | 915 | 30 | 368 | 12 | 6-40 | 30.66 | 1 | 0 | 76.25 | 2.41 |