How the contract works
A contract on this event pays $1 if Cerundolo wins the match and nothing if he does not. The price at any moment reflects what buyers and sellers currently think the chance of a Cerundolo win is: a contract trading at 0.30, for example, would imply traders see roughly three chances in ten of that outcome, though that is a hypothetical figure and not the level seen here. The contract settles based on the official result of the Fritz-Cerundolo match as recorded on the ATP Tour scores page. If the match ended in retirement, default or disqualification, the player who advanced in the tournament is the winner for settlement purposes. If the result is not clear or the match is undecided by 18 September 2026, the contract resolves 50-50 instead. Positions in this contract can typically be sold before settlement at whatever price is then available.
Yes1%
No99%
Probability
How the price has moved
The available figures show a flat zero level on Polymarket, the venue carrying the contract's $1,185,489 in volume, with no venue disagreement to report. That flatness, combined with the scheduled match date of 4 September 2026 already having passed, points to a market that has already absorbed the result rather than one still debating it. The record here does not include a point-by-point history of the price during the match itself, so no specific in-match trigger for the move can be cited beyond the result of the match.
Analysis
Context
This contract covers a single match at the 2026 US Open between Taylor Fritz, the highest-ranked American man in the draw, and Francisco Cerundolo, an Argentine known for strong hard-court results in recent seasons. The match was originally scheduled for 4 September 2026 at Flushing Meadows. Whoever won that match advances further in the men's singles draw; the loser is eliminated from the tournament.
The consensus figure across venues sits at zero, and the single venue carrying volume, Polymarket, prices the Cerundolo outcome at zero as well, on total trading of $1,185,489. That is a large amount of money for a single tennis match contract, which signals this was an actively traded market during the lead-up to and through the match itself, not a thinly followed one. A flat reading of zero, with no spread to speak of because there is effectively one liquid venue, is the signature of a market that regards the question as decided rather than uncertain. Tennis contracts like this one typically move fast: pre-match pricing reflects recent form, surface fit and head-to-head history, then the price collapses to one extreme or the other within the match itself and stays there once the last point is played. Given that the scheduled date of 4 September 2026 has already passed as of this page, the zero level most plausibly reflects a completed match rather than a market still weighing the two players' chances. The settlement mechanism is straightforward for tennis: the ATP's own live scoring page is the named source, which removes most ambiguity except in the rare case of a walkover or a result dispute, both of which the rules explicitly cover by falling back to a 50-50 settlement if unresolved by 18 September 2026.
What moves the probability
Completed match result
The match was scheduled for 4 September 2026 and, based on the pricing, appears to have already been played and decided. Once a match concludes, the price for the losing side's outcome moves to zero and has little reason to move back.
Single-venue pricing
Nearly all recorded volume sits on one venue, Polymarket, so there is no meaningful cross-venue spread to read for disagreement. A single dominant venue pricing at zero indicates broad agreement on the outcome, not a contested call.
ATP scoring as the settlement source
Because settlement runs off the ATP Tour's own live scores page, there is little room for a dispute over who actually won the match itself. The main residual risk is a walkover or an unclear result, both of which trigger the 50-50 fallback rather than genuine uncertainty about play.
Retirement and default clause
If the match ended early through retirement, default or disqualification, the rules assign the win to whichever player advanced in the tournament. This matters for how a truncated match is scored, though it does not change a price that has already settled at an extreme.
The case for
- For this contract to pay out, the official ATP record must show Francisco Cerundolo as the winner of the match originally scheduled for 4 September 2026.
- If the match instead ended in Fritz's retirement, default or disqualification before completion, Cerundolo would need to have been the player who advanced to satisfy the rule.
- Any dispute over the recorded result would need to be resolved in Cerundolo's favor on the ATP Tour scores page before the 18 September 2026 cutoff.
The case against
- The zero price on the only venue carrying meaningful volume, $1,185,489, points to a match that has already been decided against Cerundolo.
- Fritz, as the American player with home-tournament conditions, was already a live contender to advance before the match, and nothing in the current pricing suggests that changed.
- If the result is genuinely ambiguous, the rules fall back to a 50-50 settlement rather than a Cerundolo win, so uncertainty alone would not resolve the contract in his favor.
What to watch
The remaining date that matters is 18 September 2026, the deadline the rules set for resolving any ambiguity; if the official ATP result is unclear or undecided by then, the contract falls back to a 50-50 settlement rather than tracking who actually won on court. Short of a formal dispute over the recorded score on the ATP Tour scores page, there is no other scheduled event between now and settlement expected to move this price.
Trade this contract
Open on Polymarket
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