Mathys Erhard vs Olaf Pieczkowski Prediction (Aug 4, 2026)
Result: Mathys Erhard won. We gave Mathys Erhard 48% before the match, so our pick (Olaf Pieczkowski) was wrong.
Brier score (lower is better): ours 0.271, market six hours out 0.116.
| Our model | Olaf Pieczkowski 52% · Mathys Erhard 48% |
| Market price at our call | Olaf Pieczkowski 35% |
| Event | Challenger Grodzisk Mazowiecki · Hard |
| Scheduled start | Tue Aug 4, 2026, 10:20 AM ET |
| Call logged | 2026-08-03 23:47 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 Challenger Grodzisk Mazowiecki 2026 predictions · Mathys Erhard predictions
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