Madison Keys vs Katerina Siniakova Prediction (Aug 18, 2026)
Result: Madison Keys won. We gave Madison Keys 67% before the match, so our pick (Madison Keys) was right.
Brier score (lower is better): ours 0.112, market six hours out 0.062.
| Our model | Madison Keys 67% · Katerina Siniakova 33% |
| Market price at our call | Madison Keys 74% |
| Event | Cincinnati · Hard |
| Scheduled start | Tue Aug 18, 2026, 02:00 PM ET |
| Call logged | 2026-08-17 15:29 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 Cincinnati 2026 predictions
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