TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 19, 8:20 AM EST
Kalshi
Three professional golfers compete in a 3-ball matchup during the first round of the 2026 U.S. Open. The golfer with the lowest score for the round wins the matchup.
The winner of the 3-ball matchup is determined by the lowest score achieved during the 1st round of the 2026 U.S. Open. If multiple participants are tied for the lowest score at the end of the round, the Yes payout is divided equally among all tied participants, calculated as $1 divided by the number of tied participants and rounded down to the nearest cent, with the No payout equal to $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. This market's odds may lead or lag sportsbook lines depending on information flow and trader conviction. Comparing the two can reveal where professional oddsmakers and decentralized traders disagree, potentially signaling value or consensus shifts in how the golf match is perceived.
On Kalshi, this market is priced through an order-book mechanism where traders buy and sell shares corresponding to 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 outcome reflects the collective willingness of traders to commit capital, with higher prices indicating stronger belief in that result. As new information emerges or trader sentiment shifts, the bid-ask spread adjusts, and prices move to equilibrate supply and demand across all three competitors in the 1st Round 3-Ball match.
This market resolves around Jun 18, 2026, once the 1st Round 3-Ball match concludes and the result is verified against credible public sources. The outcome is determined by the official result of the golf competition, confirmed through established reporting channels. Until that point, traders can continue to buy and sell positions as new developments or performance data emerge, allowing the market price to reflect evolving expectations right up to the resolution deadline.
Several factors may shift trader positioning before resolution. Recent form and scoring trends for Sveinsson, Rozo, and Sato can trigger repricing as new tournament data surfaces. Course conditions, weather forecasts, and any injury or withdrawal announcements will likely prompt rapid market adjustments. Media coverage and expert commentary may also influence trader confidence. Additionally, live scoring during the round itself will drive continuous price movement as the match unfolds, with each shot and leaderboard update potentially reshaping the odds in real time.