

Liudmila Samsonova defeated Naomi Osaka 6-2 4-6 7-5 in the Madrid round of 64 on clay. The upset overturned the form book — Naomi Osaka came in ranked #13, leading the head-to-head 3–1. Liudmila Samsonova narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-27 | Montreal | R64 | hard | Naomi Osaka | 4-6 7-6 6-3 |
| 2025-06-16 | Berlin | R32 | grass | Liudmila Samsonova | 3-6 7-6 6-4 |
| 2025-03-18 | Miami | R64 | hard | Naomi Osaka | 6-2 6-4 |
| 2024-03-06 | Indian Wells | R64 | hard | Naomi Osaka | 7-5 6-3 |
Averages over each player's completed matches in the selected window (128 vs 122). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Samsonova L.: 4 days rest · 2 matches, 62 games (7d) · Osaka N.: 9 days rest · 3 matches (14d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the clay field, opponent-adjusted over 52 weeks). About