| Tournament | Round | Isabel Van Hoorn | Barry Harridge |
| 22.08.1999 Bentleigh (VIC) | 1 | 383 | 487 |
| 04.03.2001 Bendigo (VIC) | 1 | 339 | 319 |
| 19.01.2003 Bil Rose Aestival (VIC) | 2 | 324 | 384 |
| 25.05.2008 Dandenong (VIC) | 1 | 362 | 384 |
| Head-to-head after 4 games | 1 | 3 | |
| Average score | 352 | 393.5 | |
| Spread: | -166 | 166 | |