Klara Koukalova defeated Mariana Diaz Oliva 6-3 4-6 7-5 in the Sopot qualifying round of 16 on clay. The result followed the form book — Klara Koukalova came in leading the head-to-head 1–0. Klara Koukalova extended the head-to-head to 2–0.
Koukalova K. came through in three sets.
Klara Koukalova beat Mariana Diaz Oliva 6-3 4-6 7-5. Umpiry, "Klara Koukalova vs Mariana Diaz Oliva — Sopot Qualifying Round of 16", https://umpiry.com/match/2000-07-17/koukalova-vs-oliva-sopot-q16?utm_source=cite (as of 17 July 2000).