Martina Hingis defeated Wiltrud Probst 6-2 6-0 in the Hilton Head quarter-final on clay. 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 | R128 | hard | Martina Hingis | 6-1 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.