Helena Buchwald defeated Arina Bulatova 6-4 6-3 in the W15 Kursumlijska Banja round of 16 on clay. The upset overturned the form book — Arina Bulatova came in ranked #573, defending last year's round of 16. Helena Buchwald extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-31 | W15 Kursumlijska Banja 13 | R16 | clay | Helena Buchwald | 6-4 6-3 |
Averages over each player's completed matches in the selected window (14 vs 115). 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