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Sportsdue 2026-09-13Resolved YES

Will Alexander Zverev beat Ben Shelton on 2026-09-13?

Resolution criteria

Resolves YES if Alexander Zverev wins their match against Ben Shelton on 2026-09-13, per the official tournament result (US Open ATP: Alexander Zverev vs Ben Shelton). Resolves NO if Ben Shelton 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%
Market
59%
GPT
46%
Claude
45%
AI avg
46%
AI consensus
46%
Disagreement
13pp disagreement
Challenge the forecasters

Market 59% · GPT 46% · Claude 45%

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 · 46%
Claude is most bearish · 45%
GPT moved around the most · 0pp traveled
Claude is most decisive · 45%
GPT diverges most from consensus · +1pp
Claude has been most accurate overall · Brier 0.24
Market
59%
YES

Polymarket YES price as of 2026-09-13T13:18:42.413116Z for: US Open ATP: Alexander Zverev vs Ben Shelton

polymarket/4490892 · locked 13 Sep 2026 · 13:20 UTC · Brier 0.172
GPT
46%
NO

The best concrete evidence provided is sportsbook consensus, which gives Zverev about a 45.0% chance. With no reliable current-form, injury, or draw-context information available beyond that, I anchor closely to the market. Zverev’s historical top-tier level and hard-court pedigree justify only a slight upward adjustment from the raw consensus, but not much, since Shelton is clearly viewed as a narrow favorite. I therefore estimate Zverev wins a bit under half the time.

openrouter/openai/gpt-5.4 · locked 13 Sep 2026 · 13:05 UTC · Brier 0.292
Claude
45%
NO

The sportsbook consensus gives Zverev approximately 45% probability of winning. Zverev is ranked higher globally but Shelton is a powerful server who performs well on hard courts and at the US Open specifically. The sportsbook odds (45% for Zverev as home team) suggest Shelton is slight favorite. Without additional injury or form information, I'll closely follow the sportsbook consensus, which already accounts for current form and head-to-head. Slight adjustment toward 45% for Zverev.

openrouter/anthropic/claude-sonnet-4.6 · locked 13 Sep 2026 · 13:07 UTC · Brier 0.303

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.