Chun-Hsin Tseng vs Jan Kumstat Prediction (Aug 22, 2026)
Result: Jan Kumstat won. We gave Jan Kumstat 43% before the match, so our pick (Chun-Hsin Tseng) was wrong.
Brier score (lower is better): ours 0.330, market six hours out 0.102.
| Our model | Chun-Hsin Tseng 57% · Jan Kumstat 43% |
| Market price at our call | Chun-Hsin Tseng 34% |
| Event | Challenger Prague · Clay |
| Scheduled start | Sat Aug 22, 2026, 10:00 AM ET |
| Call logged | 2026-08-22 00:05 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 Prague 2026 predictions · Chun-Hsin Tseng predictions · Jan Kumstat predictions
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