

Aryna Sabalenka defeated Marta Kostyuk 7-6 7-6 in the Madrid quarter-final on clay. The result followed the form book — Aryna Sabalenka came in ranked #1, leading the head-to-head 4–0, defending last year's final. Aryna Sabalenka extended the head-to-head to 5–0.
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-01-04 | Brisbane | F | hard | Aryna Sabalenka | 6-4 6-3 |
| 2025-05-06 | Rome | R16 | clay | Aryna Sabalenka | 6-1 7-6(8) |
| 2023-05-29 | Roland Garros | R128 | clay | Aryna Sabalenka | 6-3 6-2 |
| 2022-02-14 | Dubai | R32 | hard | Aryna Sabalenka | 6-4 6-1 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.