TOTAL VOLUME:
$154.8b
24H VOL:
$277,138,640
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,905,404,943
412,077
Markets across
39,838
events
MATCHED EVENTS:
4,526
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 18, 10:19 PM EST
Polymarket
This market refers to the tennis match between Spencer Johnson and Erik Arutiunian in the Fort Worth, USA, Qualifying, originally scheduled for October 18, 2026 at 3:30PM 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 November 1, 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 Fort Worth, USA, Qualifying, originally scheduled for October 18, 2026 at 3:30PM 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 November 1, 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 the wisdom of the crowd and can differ from traditional sportsbook odds. Sportsbooks set lines based on their own models and to balance action, while this market is driven by individuals willing to put their capital behind their beliefs. If a significant discrepancy exists, arbitrage opportunities may arise, where traders can profit by simultaneously buying and selling shares on Polymarket and at a sportsbook. However, it’s important to remember that both represent probabilities of the same event occurring.
On Polymarket, this market is priced through a continuous auction mechanism. Traders buy and sell shares representing their belief in the likelihood of a particular outcome. As more people buy shares in a specific outcome, the price of those shares increases, reflecting a higher implied probability. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of a share directly corresponds to the probability of that outcome occurring, with the total value of all shares summing to 1. This dynamic pricing ensures the market reflects the collective intelligence of its participants.
This market resolves around Oct 25, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Specifically, the result of the Fort Worth match between Spencer Johnson and Erik Arutiunian will be used to determine the winning outcome. The platform will rely on official results and widely accepted sources to verify the final result. Traders will then be able to claim their winnings based on the outcome of the match and the shares they hold.
Several factors could influence the price of shares in this market. Any news regarding the players' form, injuries, or changes in their training regimens could significantly impact the odds. Unexpected announcements about the match location or conditions could also cause shifts in sentiment. Furthermore, general public opinion, as reflected in social media or sports news, can influence trading activity and therefore the price of shares on Polymarket. Major upsets in related matches could also indirectly affect this market’s price.