Chayenne Ewijk defeated Irina Kuzmina 7-5 6-2 in the Portimao 10K qualifying round on hard. The upset overturned the form book — Irina Kuzmina came in leading the head-to-head 2–1. Chayenne Ewijk narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-09-01 | Alphen a d Rijn 25K | R16 | clay | Chayenne Ewijk | 6-4 3-6 6-2 |
| 2007-11-19 | Barcelona 10K | R16 | clay | Irina Kuzmina | 6-7(5) 6-1 4-0 |
| 2006-01-23 | Grenoble 10K | R16 | hard | Irina Kuzmina | 7-5 4-6 6-3 |
Averages over each player's completed matches in the selected window (1 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About