Heike Thoms defeated Katalin Miskolczi 7-5 3-6 7-6 in the Biel 10K round of 32 on clay. The upset overturned the form book — Katalin Miskolczi came in leading the head-to-head 1–0. Heike Thoms claimed a first win over Katalin Miskolczi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-03-24 | Dinard 10K | R32 | clay | Katalin Miskolczi | 6-4 6-1 |