| Date | Tournament | State | Round | Derek McKenzie | Joan Colburt |
|---|---|---|---|---|---|
| 23/08/1998 | Queensland Championships | QLD | 12 | 412 | 370 |
| 11/10/1998 | Greenbank | QLD | 3 | 334 | 407 |
| 21/03/1999 | Redcliffe | QLD | 5 | 432 | 323 |
| 02/05/1999 | Maelstrom | QLD | 4 | 438 | 386 |
| Head-to-head after 4 games | 3 | 1 | |||
| Average score | 404.00 | 371.50 | |||
| Spread | 130 | -130 | |||