Ganna Poznikhirenko defeated Olga Ianchuk 3-6 6-4 6-3 in the Batumi 25K round of 32 on hard. The upset overturned the form book — Olga Ianchuk came in leading the head-to-head 4–1. Ganna Poznikhirenko narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-08-28 | W25+H Penza | R32 | hard | Olga Ianchuk | 6-4 6-4 |
| 2012-10-22 | Antalya 10K | SF | clay | Olga Ianchuk | 7-5 2-6 6-4 |
| 2012-09-24 | Telavi 50K | QF | clay | Ganna Poznikhirenko | 6-3 7-5 |
| 2010-05-17 | Kharkiv 25K | R32 | clay | Olga Ianchuk | 7-6(4) 6-4 |
| 2009-10-12 | Kharkiv 10K | R32 | carpet | Olga Ianchuk | 6-4 6-4 |
Averages over each player's completed matches in the selected window (165 vs 41). 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. About