TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 8, 3:11 AM EST
Polymarket
This market refers to the doubles tennis match between Helioevaara/Patten and Arnaldi/Struff in the US Open ATP, originally scheduled for September 6, 2026 at 11:00AM ET. This market will resolve to 'Helioevaara/Patten' if the team of Helioevaara/Patten advances against Arnaldi/Struff. This market will resolve to 'Arnaldi/Struff' if the team of Arnaldi/Struff advances against Helioevaara/Patten. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 20, 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 doubles tennis match between Helioevaara/Patten and Arnaldi/Struff in the US Open ATP, originally scheduled for September 6, 2026 at 11:00AM ET. This market will resolve to 'Helioevaara/Patten' if the team of Helioevaara/Patten advances against Arnaldi/Struff. This market will resolve to 'Arnaldi/Struff' if the team of Arnaldi/Struff advances against Helioevaara/Patten. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 20, 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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.
Currently, prediction market odds often reflect a similar assessment to those found at sportsbooks, though discrepancies can emerge. Sportsbooks typically incorporate a 'vig' or commission into their odds, while Polymarket allows traders to directly express their beliefs, potentially leading to different price discovery. If polls or analysts heavily favor one team, we might see a corresponding increase in the price of that outcome on this market. However, the wisdom of the crowd on Polymarket can sometimes diverge from expert opinions or initial sportsbook lines, especially as new information becomes available.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome. The price of these shares directly reflects the probability of Helioevaara/Patten winning against Arnaldi/Struff, as determined by the collective actions of all traders. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The more traders believe in an outcome, the higher the share price will climb, and vice versa. This dynamic pricing ensures that the market odds are constantly updated based on the latest information and sentiment.
This market resolves around Sep 13, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the US Open doubles match between Helioevaara/Patten and Arnaldi/Struff. The platform will verify the winner through official tournament results and reporting. Traders holding shares in the winning outcome will be entitled to a payout, while those holding shares in the losing outcome will forfeit their investment. The resolution process ensures a transparent and objective determination of the market's outcome.
Several factors could influence the price of this market before the match concludes. Any news regarding player injuries, changes in playing conditions, or even strategic adjustments announced by either team could significantly shift trader sentiment. Unexpected performance in earlier rounds of the US Open, or even commentary from tennis analysts, could also impact the market. A strong showing by either team in their preceding matches would likely increase confidence and drive up the price of their corresponding outcome on Polymarket.