| Date | Tournament | State | Round | Jeff Chelton | Zina Costanzo |
|---|---|---|---|---|---|
| 05/04/1999 | Australian Championships | NSW | 5 | 493 | 329 |
| 01/08/1999 | Winter Masters | NSW | 3 | 393 | 318 |
| 09/06/2001 | Victorian Championships | VIC | 21 | 327 | 335 |
| 12/04/2004 | Australian Championships | ACT | 13 | 334 | 372 |
| 11/06/2007 | Victorian Championships | VIC | 3 | 323 | 390 |
| Head-to-head after 5 games | 2 | 3 | |||
| Average score | 374.00 | 348.80 | |||
| Spread | 126 | -126 | |||