Klara Koukalova defeated Marion Bartoli 4-6 6-1 6-2 in the Warsaw round of 32 on clay. The upset overturned the form book — Marion Bartoli came in leading the head-to-head 4–2. Klara Koukalova narrowed the head-to-head to 4–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-02-18 | Dubai | R32 | hard | Marion Bartoli | 3-6 6-4 6-1 |
| 2012-12-31 | Shenzhen | QF | hard | Klara Koukalova | 6-3 6-2 |
| 2012-02-06 | Paris | SF | carpet | Marion Bartoli | 7-6(3) 6-0 |
| 2011-08-22 | New Haven | R16 | hard | Marion Bartoli | 6-2 2-6 6-1 |
| 2011-01-10 | Hobart | QF | hard | Klara Koukalova | 6-4 6-2 |
| 2007-05-07 | Prague | SF | clay | Marion Bartoli | 6-3 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (76 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About