TOTAL VOLUME:
$134.2b
24H VOL:
$129,159,707
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,442,132,418
404,744
Markets across
30,489
events
MATCHED EVENTS:
2,691
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 18, 4:30 PM EST
Kalshi
This market determines the winner of a 3-ball golf competition featuring Sahith Theegala, Jackson Koivun, and Michael Kim 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 often diverge from traditional sportsbook lines because they reflect real-time trader conviction rather than fixed betting spreads. On this market, participants continuously adjust prices based on live tournament data, player form, and course conditions, whereas sportsbooks typically lock lines until adjustment windows. Prediction markets can be more responsive to late-breaking information, though sportsbook odds benefit from professional oddsmakers' deep statistical models. Both venues aim to price the same outcome, but the mechanisms and update frequency differ significantly.
On Kalshi, this market is priced through a continuous order-book mechanism where traders buy and sell shares representing each possible outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective probability assigned by active traders; as new information emerges during the tournament, participants adjust their bids and offers, moving the market price in real time. This dynamic pricing ensures the odds stay current with tournament developments and player performance throughout the first round.
This market resolves around Jun 18, 2026, once the first-round 3-ball competition concludes and results are verified against credible public sources. The outcome is determined by the official PGA Tour scoring and leaderboard data published after play ends. Resolution hinges on which player or players achieve the specified result in this matchup, confirmed through standard tournament reporting channels.
Key catalysts include live scoring updates during the tournament round, player performance relative to course conditions, and any weather delays or course adjustments that affect strategy. Injury reports or last-minute lineup changes before play begins can also shift odds sharply. Real-time leaderboard movement, particularly if one player pulls ahead early, typically drives significant trading volume and price adjustments as traders reassess probabilities based on actual play rather than pre-tournament expectations.