Oliver Gross defeated Herve Grenier 6-1 6-1 in the Poland Masters 1 round of 16 on clay. The upset overturned the form book — Herve Grenier came in leading the head-to-head 1–0, but Oliver Gross had been the form player, winning 2 of their last 4 on clay. Oliver Gross claimed a first win over Herve Grenier in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-03-27 | Morocco Masters 4 | R32 | clay | Herve Grenier | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.