TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 21, 7:12 PM EST
Kalshi
The 2026 U.S. Open golf tournament will conclude with one golfer posting the lowest score over 72 holes. These markets predict the final winning score relative to par, which reflects how many strokes above or below the course's standard par the champion finishes.
The 2026 U.S. Open winning score will be categorized by the champion's final score relative to par after 72 holes, excluding any playoff holes. Scores are measured relative to par, where lower (more negative) scores are better. The possible outcomes partition all potential winning scores into four ranges: even par or worse (E, +1, +2, etc.), between -1 and -3, between -4 and -6, or -7 or better (-7, -8, -9, etc.). Each market resolves to Yes if the winning golfer's final score falls within the specified range for that market. A golfer's final score is their total score relative to par calculated after completion of all 72 holes, with any playoff holes excluded from this calculation.
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 beliefs from traders risking real capital on outcomes. This market may show tighter or wider spreads than traditional sportsbooks depending on liquidity and how confident traders are about scoring ranges. Comparing the two can reveal where consensus differs or where one venue perceives edge.
On Kalshi, this market is priced through an order-book mechanism where traders buy and sell contracts representing different winning scores. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each contract's price reflects the collective probability assigned by active traders; as new information surfaces—such as weather forecasts or player injuries—orders flow in and prices adjust. The bid-ask spread tightens or widens based on trading volume and conviction, giving you a real-time read on market confidence in each scoring outcome.
This market resolves around Jun 22, 2026, once the U.S. Open tournament concludes and the champion's final score is confirmed. The outcome is verified against credible public sources reporting the official result. Until that point, prices will fluctuate as tournament play unfolds and traders update their expectations based on leaderboard position, player performance, and course difficulty.
Major catalysts include weather changes affecting course difficulty and player scoring, injuries or withdrawals of top contenders, and real-time leaderboard updates during tournament rounds. Early-round performance often reshapes expectations about final scoring ranges. Course setup announcements, player form leading into the event, and historical scoring patterns at the venue also influence trader positioning. As the tournament progresses, each round's results narrow the range of plausible outcomes and drive repricing.