TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 27, 12:46 PM EST
Polymarket
This market refers to the tennis match between Guilherme Valdoleiros and Robin Bertrand in the Porto 2, Portugal, Qualifying, originally scheduled for September 27, 2026 at 8:20AM ET. This market will resolve to 'Guilherme Valdoleiros' if Guilherme Valdoleiros advances against Robin Bertrand. This market will resolve to 'Robin Bertrand' if Robin Bertrand advances against Guilherme Valdoleiros. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 11, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Guilherme Valdoleiros and Robin Bertrand in the Porto 2, Portugal, Qualifying, originally scheduled for September 27, 2026 at 8:20AM ET. This market will resolve to 'Guilherme Valdoleiros' if Guilherme Valdoleiros advances against Robin Bertrand. This market will resolve to 'Robin Bertrand' if Robin Bertrand advances against Guilherme Valdoleiros. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 11, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds often reflect a different set of information and incentives than traditional sportsbooks. While sportsbooks primarily consider statistical analysis and expert opinions, this market incorporates the wisdom of the crowd, allowing anyone to express their beliefs with real capital. As a result, you may find that prediction market probabilities diverge from sportsbook odds, especially when there’s significant public interest or disagreement about the likely outcome of the Valdoleiros vs Bertrand match. These differences can present opportunities for arbitrage or informed speculation.
On Polymarket, this market is priced through a continuous auction mechanism, where traders buy and sell shares representing their belief in the outcome of the Valdoleiros vs Bertrand match. The price of each share directly corresponds to the implied probability of that outcome occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The more traders who believe an outcome is likely, the higher the price of its shares will rise, and vice versa. This dynamic pricing ensures that the market reflects the aggregated predictions of all participants.
This market resolves around Oct 4, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Valdoleiros vs Bertrand match, as determined by the governing body of the sport. The platform will then verify the outcome against these sources to determine which outcome wins and distribute payouts accordingly. Traders should monitor official sources for the final result to understand when the market will be settled.
Several signals or events could significantly move this market before it resolves. Any news regarding player injuries, changes in coaching strategies, or unexpected performance in prior matches for either Guilherme Valdoleiros or Robin Bertrand could influence trading activity. Public sentiment, reflected in social media or expert analysis, can also impact the market. Furthermore, large trades by influential participants on Polymarket could cause noticeable shifts in the odds, especially as the match date approaches and more information becomes available.