TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 20, 6:47 PM EST
Polymarket
This market refers to the tennis match between Jan Kobierski and Spencer Johnson in the San Diego 2, USA, Qualifying, originally scheduled for September 20, 2026 at 3:10PM ET. This market will resolve to 'Jan Kobierski' if Jan Kobierski advances against Spencer Johnson. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Jan Kobierski. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 4, 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 Jan Kobierski and Spencer Johnson in the San Diego 2, USA, Qualifying, originally scheduled for September 20, 2026 at 3:10PM ET. This market will resolve to 'Jan Kobierski' if Jan Kobierski advances against Spencer Johnson. This market will resolve to 'Spencer Johnson' if Spencer Johnson advances against Jan Kobierski. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 4, 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.
Generally, prediction market odds tend to reflect the wisdom of the crowd, often proving more accurate than traditional sportsbook odds, especially when considering information not immediately captured by sportsbooks. Sportsbooks set initial lines based on their own analysis, while this market allows anyone to participate and express their beliefs, potentially leading to a more nuanced assessment of the likely outcome. However, discrepancies can occur due to differing levels of information, risk tolerance, and market participation. It’s important to compare both to form a comprehensive view.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the likelihood of a particular outcome. The price of a 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. As more traders participate and express their views, the price adjusts to reflect the collective assessment of the event's potential results. The current top outcome, as indicated by share price, is heavily favored, demonstrating strong market conviction.
This market resolves around Sep 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the San Diego 2 match between Jan Kobierski and Spencer Johnson. The platform will verify the result against widely available and trusted sources to determine the winning outcome. Traders holding shares in the winning outcome will be entitled to a payout based on the final share price at the time of resolution.
Several factors could influence the price of this market before resolution. Any news regarding player form, injuries, or changes in strategy could significantly shift trader sentiment. Unexpected announcements about match conditions or venue changes could also impact the market. Furthermore, broader trends in player performance or public perception could play a role. Major upsets in related matches or tournaments might also cause traders to reassess their probabilities, leading to price movements in this market.