Julia Stamatova defeated Aleksandra Karamanoleva 6-4 6-3 in the Sofia 25K q16 on clay. The upset overturned the form book — Aleksandra Karamanoleva came in leading the head-to-head 1–0. Julia Stamatova claimed a first win over Aleksandra Karamanoleva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-04-01 | Heraklion 10K | QF | carpet | Aleksandra Karamanoleva | 7-6(6) 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.