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: Jun 18, 4:00 PM EST
Kalshi
Three professional golfers compete in a 3-ball format during the first round of the 2026 U.S. Open, with the player posting the lowest score declared the winner of the matchup.
The winner of the 3-ball matchup is determined by the lowest score posted during the first round of the 2026 U.S. Open. If multiple participants tie for the lowest score at the end of the round, the Yes payout is divided equally among all tied participants, with each receiving $1/N rounded down to the nearest cent, where N equals the number of tied participants; the No payout equals $1 minus the Yes payout. If any golfer withdraws prior to teeing off, all markets resolve to fair market value.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. This market may price the event differently than traditional sportsbooks, particularly if informed traders spot value or if public perception lags behind expert analysis. Comparing the two can reveal where consensus breaks down and highlight potential trading opportunities.
On Kalshi, this market is priced through a continuous order-book mechanism where traders submit bids and asks, and the market price reflects the last executed trade. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The implied probability is derived directly from the current price, so as new trades occur, the odds update in real time. Liquidity and trading volume influence how quickly prices respond to new information, and wider bid-ask spreads may appear during periods of lower activity.
This market resolves around Jun 18, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the actual performance and final standings in the matchup, assessed against authoritative sports sources. Until that point, traders can adjust positions based on breaking news, athlete updates, or shifting expectations. Once the event concludes and results are official, the market will settle and positions will be paid out accordingly.
Key catalysts include athlete injuries, recent form and performance trends, head-to-head records, and any last-minute roster or format changes. Media coverage and expert commentary can shift trader sentiment, especially if respected analysts highlight overlooked factors. Weather conditions, venue details, or scheduling adjustments may also influence expectations. As the event date approaches, accumulating data about participant fitness and confidence typically drives price movement, with major surprises capable of triggering sharp repricing in either direction.