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, levelling the head-to-head at 1–1.
Gross O. took it in straight sets.
Oliver Gross beat Herve Grenier 6-1 6-1. Umpiry, "Oliver Gross vs Herve Grenier — Poland Masters 1 Round of 16", https://umpiry.com/match/1993-06-27/grenier-vs-gross-poland-masters-1-r16?utm_source=cite (as of 27 June 1993).