Vivienne Vierin defeated Martina Gledacheva 6-3 6-4 in the Dubrovnik 10K semi-final on clay. The upset overturned the form book — Martina Gledacheva came in leading the head-to-head 1–0, but Vivienne Vierin had been the form player, winning 4 of their last 10 on clay. Vivienne Vierin claimed a first win over Martina Gledacheva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-08-16 | Todi 10K | R16 | clay | Martina Gledacheva | 6-0 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.