Resolves YES if Karen Khachanov wins their match against Learner Tien on 2026-09-07, per the official tournament result (US Open ATP: Karen Khachanov vs Learner Tien). Resolves NO if Learner Tien 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
GPT 64% · Claude 64% · Market 37%
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The strongest evidence is the sportsbook consensus, which implies Khachanov around a 65.8% favorite. That aligns with a general prior that Khachanov is the more established ATP player, though Tien’s upside and possible surface/age-driven variance keep this from being much higher. With no reliable additional information on current injuries or form beyond the reference data, I shade only slightly below the market number to reflect uncertainty and upset potential in a single tennis match.
The sportsbook consensus gives Khachanov approximately 65.8% probability of winning. Khachanov is a seasoned ATP top-30 player with Grand Slam experience, while Tien is a younger, emerging American player. The sportsbooks' margin-adjusted probability suggests Khachanov is a moderate favorite. I'll slightly discount the sportsbook figure to account for uncertainty and home crowd advantage for Tien (US Open), settling near 64%.
Polymarket YES price as of 2026-09-07T19:43:53.982418Z for: US Open ATP: Karen Khachanov vs Learner Tien
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