Maria Penkova defeated Natalia Orlova 6-3 6-4 in the Sofia 25K round of 16 on clay. The result followed the form book — Maria Penkova came in leading the head-to-head 1–0. Maria Penkova extended the head-to-head to 2–0.
Penkova M. took it in straight sets.
Maria Penkova beat Natalia Orlova 6-3 6-4. Umpiry, "Maria Penkova vs Natalia Orlova — Sofia 25K Round of 16", https://umpiry.com/match/2006-09-11/orlova-vs-penkova-sofia-25k-r16?utm_source=cite (as of 11 September 2006).