Naomi Osaka vs Katerina Siniakova Prediction (Sep 2, 2026)
Result: Naomi Osaka won. We gave Naomi Osaka 71% before the match, so our pick (Naomi Osaka) was right.
Brier score (lower is better): ours 0.087, market six hours out 0.044.
| Our model | Naomi Osaka 71% · Katerina Siniakova 29% |
| Market price at our call | Naomi Osaka 71% |
| Event | US Open Women Singles · Hard |
| Scheduled start | Wed Sep 2, 2026, 02:00 PM ET |
| Call logged | 2026-09-01 05:31 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.
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