Barbora Strycova defeated Klara Koukalova 7-5 3-6 6-4 in the Linz qualifying round of 16 on hard. The upset overturned the form book — Klara Koukalova came in leading the head-to-head 2–0. Barbora Strycova claimed a first win over Klara Koukalova in three meetings, narrowing the head-to-head to 2–1.
Strycova B. came through in three sets.
Strycova B. and Koukalova K. faced 3 of the same opponents in the last 12 months. Strycova B. went 0–3 (0%) against them, Koukalova K. 2–2 (50%). Koukalova K. came out better against 2 of 3 comparable opponents, Strycova B. against 0 — though 1 of those edges carries caveats (lower-tier event).
Only 3 common opponents — small sample, treat as indicative.
Hard: level 1–1 · Clay: Koukalova K. leads 1–0
Barbora Strycova beat Klara Koukalova 7-5 3-6 6-4. Umpiry, "Barbora Strycova vs Klara Koukalova — Linz Qualifying Round of 16", https://umpiry.com/match/2009-10-11/koukalova-vs-strycova-linz-q16?utm_source=cite (as of 11 October 2009).