Martina Hingis defeated Yayuk Basuki 7-6 6-1 in the Sydney quarter-final on hard. The result followed the form book — Martina Hingis came in leading the head-to-head 1–0. Martina Hingis extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-01-19 | Australian Open | R16 | hard | Martina Hingis | 6-0 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.