Kristina Triska defeated Annabel Ellwood 1-6 6-3 7-6 in the Las Vegas 25K round of 16 on hard. The upset overturned the form book — Annabel Ellwood came in leading the head-to-head 1–0, but Kristina Triska had been the form player, winning 4 of their last 7 on hard. Kristina Triska claimed a first win over Annabel Ellwood in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-11-24 | Nuriootpa 25K | QF | hard | Annabel Ellwood | 6-4 6-1 |