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 14, 5:59 PM EST
Polymarket
This market refers to the tennis match between Spencer Johnson and Erik Arutiunian in the Tiburon, USA, Qualifying, originally scheduled for September 14, 2026 at 2:10PM ET. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Erik Arutiunian. This market will resolve to 'Erik Arutiunian' if Erik Arutiunian advances against Spencer Johnson. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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 Spencer Johnson and Erik Arutiunian in the Tiburon, USA, Qualifying, originally scheduled for September 14, 2026 at 2:10PM ET. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Erik Arutiunian. This market will resolve to 'Erik Arutiunian' if Erik Arutiunian advances against Spencer Johnson. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 28, 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.
Typically, prediction market odds reflect a different set of information and incentives than those found at sportsbooks. Sportsbooks often incorporate a 'vig' or commission into their odds, while prediction markets aim to represent the true probability of an event occurring as assessed by traders. It’s common to see discrepancies between the two, particularly as new information emerges or public sentiment shifts. Often, prediction markets can be more accurate than traditional polls or analyst predictions, as traders have 'skin in the game' and are incentivized to make informed decisions.
This market resolves around Sep 21, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Tiburon match between Spencer Johnson and Erik Arutiunian. The platform will verify the outcome against publicly available sources to determine the winning outcome. The market will then settle, and traders will receive payouts based on their holdings in the winning outcome.
Several factors could influence the price of shares in this market. Any news regarding the players' form, injuries, or changes in their training regimes could significantly shift trader sentiment. Unexpected announcements about match conditions or venue changes could also play a role. Publicly released analysis from tennis experts, or even significant betting activity in traditional sportsbooks, might also cause fluctuations. Ultimately, any information that alters the perceived probability of either player winning will likely impact trading volume and price movements.