Maria Joao Koehler defeated Margalita Chakhnashvili 6-2 6-3 in the Mallorca 25K round of 32 on clay. The upset overturned the form book — Margalita Chakhnashvili came in leading the head-to-head 2–0. Maria Joao Koehler claimed a first win over Margalita Chakhnashvili in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-17 | Seville 25K | R32 | clay | Margalita Chakhnashvili | 7-5 6-2 |
| 2010-06-07 | Campobasso 25K | QF | clay | Margalita Chakhnashvili | 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.