Marta Kostyuk vs Liudmila Samsonova Prediction (Sep 17, 2026)
Result: Liudmila Samsonova won. We gave Liudmila Samsonova 31% before the match, so our pick (Marta Kostyuk) was wrong.
Brier score (lower is better): ours 0.475, market six hours out 0.593.
| Our model | Marta Kostyuk 69% · Liudmila Samsonova 31% |
| Market price at our call | Marta Kostyuk 92% |
| Event | Guadalajara · Clay |
| Scheduled start | Thu Sep 17, 2026, 10:00 PM ET |
| Call logged | 2026-09-17 03:59 UTC (before first serve) |
Every call we make is logged before the match and graded after it. See the live tennis board, the full match list and our public track record.
All Guadalajara 2026 predictions · Marta Kostyuk predictions · Liudmila Samsonova predictions
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