Kasper Warming defeated Guillermo Platel 6-3 6-1 in the Greece F5 round of 32 on clay. The upset overturned the form book — Guillermo Platel came in leading the head-to-head 1–0. Kasper Warming claimed a first win over Guillermo Platel in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-07 | Finland F1 | R32 | clay | Guillermo Platel | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.