Eloisa Maria Compostizo De Andres defeated Claire Feuerstein 3-6 7-6 6-3 in the US Open q128 on hard. The upset overturned the form book — Claire Feuerstein came in leading the head-to-head 2–0. Eloisa Maria Compostizo De Andres claimed a first win over Claire Feuerstein in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-09-07 | Denain 50K | R32 | clay | Claire Feuerstein | 6-4 1-6 6-4 |
| 2005-05-02 | Tortosa 10K | R32 | clay | Claire Feuerstein | 6-2 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.