Valentyna Ivakhnenko defeated Yuliya Kalabina 6-3 6-4 in the Moscow 25K round of 32 on clay. The upset overturned the form book — Yuliya Kalabina came in leading the head-to-head 2–1, but Valentyna Ivakhnenko had been the form player, winning 3 of their last 4 on clay. Valentyna Ivakhnenko narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-05-27 | Moscow 25K | R16 | clay | Yuliya Kalabina | 4-6 7-6(5) 7-6(5) |
| 2010-09-27 | Bucha 25K | SF | clay | Valentyna Ivakhnenko | 7-5 6-2 |
| 2009-07-13 | Bucha 25K | R16 | clay | Yuliya Kalabina | 6-0 6-4 |
Averages over each player's completed matches in the selected window (46 vs 1). ATP, WTA & Challenger.
wins 47% of points on serve vs Ivakhnenko V.
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