Kateryna Bondarenko defeated Alona Bondarenko 6-1 6-3 in the Prague round of 32 on clay. The upset overturned the form book — Alona Bondarenko came in leading the head-to-head 3–1. Kateryna Bondarenko narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-06 | Ponte Vedra Beach | R16 | clay | Alona Bondarenko | 4-6 6-4 6-3 |
| 2006-02-13 | Bangalore | R32 | hard | Alona Bondarenko | 6-4 7-5 |
| 2005-12-12 | Dubai 75K | R16 | hard | Kateryna Bondarenko | 7-6(4) 6-4 |
| 2004-04-19 | Bari 25K | F | clay | Alona Bondarenko | 2-6 6-2 6-4 |
Averages over each player's completed matches in the selected window (200 vs 104). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About