Ines Heise defeated Lotty Seelen 7-6 7-5 in the Mallorca 10K round of 32 on clay. The upset overturned the form book — Lotty Seelen came in leading the head-to-head 1–0. Ines Heise claimed a first win over Lotty Seelen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-04-19 | Bari 10K | R32 | clay | Lotty Seelen | 6-1 6-4 |