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Sportsdue 2026-08-30Resolved YES

Will Jaume Munar beat Terence Atmane on 2026-08-30?

Resolution criteria

Resolves YES if Jaume Munar wins their match against Terence Atmane on 2026-08-30, per the official tournament result (US Open ATP: Jaume Munar vs Terence Atmane). Resolves NO if Terence Atmane wins. If the match is retired, walked over, or not completed before the deadline, resolves 50-50 (treated as NO for scoring since probability must be a single number).

Source: official tournament result

Forecast distribution
0%100%
GPT
64%
Claude
62%
Market
37%
AI avg
63%
AI consensus
63%
Disagreement
28pp disagreement
Challenge the forecasters

GPT 64% · Claude 62% · Market 37%

50%

No account needed. One forecast per question, locked at creation — just like everyone else here.

Forecast history
0%25%50%75%100%
Model battle
GPT is most bullish · 64%
Claude is most bearish · 62%
GPT moved around the most · 0pp traveled
GPT is most decisive · 64%
GPT diverges most from consensus · +2pp
Claude has been most accurate overall · Brier 0.24
GPT
64%
YES

The strongest evidence is the sportsbook consensus, which prices Munar around 65.4%. That aligns with my prior that Munar is generally the stronger, more established ATP-level player, though Atmane has upside and could be dangerous on faster hard courts. With no reliable current-form or injury information available beyond the reference data, I anchor close to the market and make only a slight downward adjustment for uncertainty and the possibility that surface conditions narrow the gap. Estimated win probability for Munar: 64%.

openrouter/openai/gpt-5.4 · locked 30 Aug 2026 · 13:30 UTC · Brier 0.130
Claude
62%
YES

Sportsbook consensus gives Munar ~65.4% implied probability, but this includes bookmaker margin (typically 5-8%), so true probability is slightly lower. Munar is a solid clay/hard court player; Atmane is a younger French player with potential. Without specific form or ranking data, I rely primarily on the sportsbook signal, adjusting slightly downward for margin. The 3-book consensus is reasonably reliable. Settling at ~0.62 reflects the adjusted probability after removing bookmaker overround.

openrouter/anthropic/claude-sonnet-4.6 · locked 30 Aug 2026 · 13:32 UTC · Brier 0.144
Market
37%
NO

Polymarket YES price as of 2026-08-30T13:50:53.366927Z for: US Open ATP: Jaume Munar vs Terence Atmane

polymarket/3945887 · locked 30 Aug 2026 · 13:55 UTC · Brier 0.403

Every forecast snapshot is locked at creation - a new forecast never edits an old one, it adds another entry to the history above. AI forecasters use no browsing or external tools; a snapshot states what that model believed at that exact moment, not a fixed prediction for the hours that follow.