Frederico Ferreira Silva vs Jan Kumstat Prediction (Jul 31, 2026)
Result: Jan Kumstat won. We gave Jan Kumstat 55% before the match, so our pick (Jan Kumstat) was right.
Brier score (lower is better): ours 0.205, market six hours out 0.152.
| Our model | Jan Kumstat 55% · Frederico Ferreira Silva 45% |
| Market price at our call | Jan Kumstat 62% |
| Event | ATP Challenger Oeiras · Clay |
| Scheduled start | Fri Jul 31, 2026, 08:00 AM ET |
| Call logged | 2026-07-30 21:24 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 ATP Challenger Oeiras 2026 predictions · Jan Kumstat predictions
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