TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 18, 4:20 PM EST
Kalshi
This market determines the winner of a 3-ball golf competition featuring Tom Kim, Alex Fitzpatrick, and Benjamin James during the first round of the 2026 U.S. Open. The golfer with the lowest score at the end of the round wins the matchup.
The winner of the 3-ball matchup is determined by the lowest score at the end of the round. If multiple participants tie for the lowest score, each tied participant receives an equal share of the Yes payout, calculated as $1 divided by the number of tied participants and rounded down to the nearest cent, with the No payout adjusted accordingly. 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 odds to balance liability and profit margins, while prediction markets like this one aggregate trader beliefs through continuous price discovery. Sportsbook odds may emphasize sharp action and public sentiment, whereas this market rewards accurate forecasting over time. Comparing the two can reveal where consensus differs: if prediction market prices are significantly higher or lower than sportsbook lines, it may signal where informed traders see value or risk that traditional oddsmakers have mispriced.
On Kalshi, this market is priced through continuous order-book trading, where buyers and sellers submit bids and asks for each player outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each contract reflects the collective willingness of traders to bet on that player's result, with prices ranging from near zero to near 100 cents per dollar of potential payout. As new information arrives—injury reports, weather updates, or betting patterns—traders adjust their positions, moving prices in real time. This mechanism ensures that the market price continuously incorporates available information and trader conviction.
This market resolves around Jun 18, 2026, once the first-round 3-ball event concludes and results are verifiable from credible public sources. The outcome is determined by the actual performance and finishing positions of Kim, Fitzpatrick, and James during their round. Traders holding contracts on the correct outcome receive their payout once the event is finalized and the platform confirms the result. Until that point, prices may fluctuate as live scoring and player performance data become available.
Several factors could shift prices significantly before resolution. Recent tournament form, practice-round scores, and head-to-head records between the three players often influence trader positioning. Weather forecasts and course setup changes can alter perceived difficulty and advantage. Injury announcements or late withdrawals would trigger sharp repricing. Media coverage, expert commentary, and betting action from other sportsbooks may also signal new information that traders incorporate. Real-time scoring during the round itself will drive the most dramatic moves as actual performance data replaces speculation.