Kimberly Birrell vs Petra Marcinko Prediction (Aug 30, 2026)
Result: Kimberly Birrell won. We gave Kimberly Birrell 52% before the match, so our pick (Kimberly Birrell) was right.
Brier score (lower is better): ours 0.229, market six hours out 0.240.
| Our model | Kimberly Birrell 52% · Petra Marcinko 48% |
| Market price at our call | Kimberly Birrell 50% |
| Event | US Open Women Singles · Hard |
| Scheduled start | Sun Aug 30, 2026, 02:00 PM ET |
| Call logged | 2026-08-27 17:44 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 US Open 2026 predictions · Kimberly Birrell predictions
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