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Sportsdue 2026-09-11Resolved YES

Will Alexander Zverev beat Karen Khachanov on 2026-09-11?

Resolution criteria

Resolves YES if Alexander Zverev wins their match against Karen Khachanov on 2026-09-11, per the official tournament result (US Open ATP: Alexander Zverev vs Karen Khachanov). Resolves NO if Karen Khachanov 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
81%
GPT
24%
Claude
22%
AI avg
23%
AI consensus
23%
Disagreement
59pp disagreement
Challenge the forecasters

Market 81% · GPT 24% · Claude 22%

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 · 24%
Claude is most bearish · 22%
GPT moved around the most · 0pp traveled
Claude is most decisive · 22%
GPT diverges most from consensus · +2pp
Claude has been most accurate overall · Brier 0.24
Market
81%
YES

Polymarket YES price as of 2026-09-11T12:55:05.634295Z for: US Open ATP: Alexander Zverev vs Karen Khachanov

polymarket/4431568 · locked 11 Sep 2026 · 12:56 UTC · Brier 0.038
GPT
24%
NO

The strongest evidence is the sportsbook consensus, which implies roughly a 22% chance for Zverev. With no reliable additional information on current form, injuries, or surface-specific context beyond this matchup listing, I should anchor close to that market estimate. Historically Zverev has often been the stronger player overall, but if books still price him as a clear underdog here, there is likely situational information embedded in that line. I make a small upward adjustment for baseline class and upset potential, yielding about 24%.

openrouter/openai/gpt-5.4 · locked 11 Sep 2026 · 12:34 UTC · Brier 0.578
Claude
22%
NO

The sportsbook consensus gives Zverev only ~21.8% probability of winning, suggesting Khachanov is heavily favored in this match. This is unusual given Zverev's typically higher ranking, but I should trust the sportsbook data as meaningful signal. Without additional context about injuries or form, and given three sportsbooks agree on this pricing, I'll align closely with the market consensus. Zverev winning at ~22% probability reflects the available evidence.

openrouter/anthropic/claude-sonnet-4.6 · locked 11 Sep 2026 · 12:36 UTC · Brier 0.608

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.