Gisela Riera Roura defeated Nuria Montero 6-3 6-4 in the Mallorca 10K round of 16 on clay. The upset overturned the form book — Nuria Montero came in leading the head-to-head 2–0, but Gisela Riera Roura had been the form player, winning 2 of their last 6 on clay. Gisela Riera Roura claimed a first win over Nuria Montero in three meetings, narrowing the head-to-head to 2–1.
Riera Roura G. took it in straight sets.
Gisela Riera Roura beat Nuria Montero 6-3 6-4. Umpiry, "Gisela Riera Roura vs Nuria Montero — Mallorca 10K Round of 16", https://umpiry.com/match/1997-11-25/montero-vs-roura-mallorca-10k-r16?utm_source=cite (as of 25 November 1997).