Martina Hingis defeated Sabine Appelmans 6-3 3-6 6-1 in the Sydney round of 16 on hard. The result followed the form book — Martina Hingis came in leading the head-to-head 4–0. Martina Hingis extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-29 | Roland Garros | R128 | clay | Martina Hingis | 6-0 6-4 |
| 1997-11-10 | Philadelphia | R16 | carpet | Martina Hingis | 6-2 4-6 6-2 |
| 1997-09-22 | Leipzig | QF | carpet | Martina Hingis | 6-3 6-2 |
| 1997-06-23 | Wimbledon | R16 | grass | Martina Hingis | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.