TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 4, 9:42 PM EST
Polymarket
In the upcoming US Open ATP singles match between Valentin Vacherot and Frances Tiafoe, scheduled for September 4, 2026 at 11:00AM ET: This market will resolve based on the final set score of the Valentin Vacherot vs. Frances Tiafoe match. This match is played in a best-of-5-sets format. The possible outcomes are 3-0, 3-1, “Not Completed”, and 3-2 in either direction. If the match is canceled (not played at all), or is delayed beyond 14 days from the scheduled date at 11:59 PM ET without completion, this market will resolve to 'Not Completed'. 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 'Not Completed' regardless of the set score at the time. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 'Not Completed'. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
In the upcoming US Open ATP singles match between Valentin Vacherot and Frances Tiafoe, scheduled for September 4, 2026 at 11:00AM ET: This market will resolve based on the final set score of the Valentin Vacherot vs. Frances Tiafoe match. This match is played in a best-of-5-sets format. The possible outcomes are 3-0, 3-1, “Not Completed”, and 3-2 in either direction. If the match is canceled (not played at all), or is delayed beyond 14 days from the scheduled date at 11:59 PM ET without completion, this market will resolve to 'Not Completed'. 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 'Not Completed' regardless of the set score at the time. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 'Not Completed'. 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 different perspective than traditional sportsbooks. Sportsbooks typically incorporate a 'vig' or commission into their odds, ensuring a profit margin, while this market allows for more direct peer-to-peer betting. This can lead to discrepancies, particularly when there’s strong public sentiment or expert analysis that diverges from the sportsbook’s initial assessment. It’s common to see prediction markets quickly adjust to new information, potentially offering more accurate probabilities than those found at sportsbooks, especially closer to the event date.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in each possible outcome. The price of a share directly reflects the probability of that outcome occurring, as perceived by the market participants. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information emerges, the prices fluctuate, providing a dynamic assessment of the match’s potential results. The market’s efficiency relies on the collective wisdom of the crowd and their willingness to express their predictions through trading activity.
This market resolves around Sep 11, 2026, with the outcome confirmed once the final, official score of the Vacherot vs. Tiafoe match is verifiable from credible public reporting. The resolution will be based on the officially recorded score from the tournament organizers. Any disputes regarding the official score will be handled according to Polymarket’s standard procedures. Traders holding shares in the winning outcome will be entitled to a payout, while those holding shares in losing outcomes will forfeit their investment.
Several factors could influence this market before Sep 11, 2026. Any news regarding player injuries to either Vacherot or Tiafoe would likely cause significant shifts in probabilities. Updates on their recent performance, changes in coaching staff, or even weather conditions at the match location could also play a role. Unexpected upsets in earlier rounds of the tournament, impacting player morale or fatigue, could also move the market. Finally, any significant analysis from tennis experts or changes in public sentiment could influence trading activity and thus, the odds.