Jan Kumstat vs Jamie Mackenzie Prediction (Aug 11, 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 0.201, market six hours out 0.160.

Our modelJan Kumstat 55% · Jamie Mackenzie 45%
Market price at our callJan Kumstat 61%
EventChallenger Hamburg · Clay
Scheduled startTue Aug 11, 2026, 01:00 PM ET
Call logged2026-08-11 02:41 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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