Guillermo Platel defeated Kasper Warming 7-5 6-3 in the Finland F1 round of 32 on clay. The upset overturned the form book — Kasper Warming came in leading the head-to-head 1–0. Guillermo Platel claimed a first win over Kasper Warming in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-05 | Greece F5 | R32 | clay | Kasper Warming | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.