TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 16, 2:56 PM EST
Kalshi
Rory McIlroy will compete in Round 1 of the 2026 The Open Championship, playing all 18 holes. These markets track his individual score on each hole, measured relative to par, to determine whether he achieves a birdie or better, even par, or bogey or worse on each specific hole.
McIlroy's hole scores are measured relative to par for each of the 18 holes in Round 1 of the 2026 The Open Championship. Scores are evaluated on a relative scale where lower (more negative) scores are better. A birdie or better outcome includes any score below par (e.g., -1, -2, etc.), representing one or more strokes under the hole's par. Even par (E) represents a score exactly equal to the hole's par. A bogey or worse outcome includes any score above par (e.g., +1, +2, etc.), representing one or more strokes over the hole's par. Each hole's outcome is independent and resolves based on McIlroy's actual recorded score for that specific hole during Round 1 play.
Prediction market odds on this market often diverge from traditional sportsbook odds because they reflect real-time trader consensus rather than fixed lines set by oddsmakers. Sportsbooks typically adjust odds to manage liability and profit margins, while prediction markets aggregate distributed beliefs across many participants. This market's odds can move more dynamically in response to breaking news, course conditions, or player performance updates. Comparing the two reveals whether professional bettors and casual traders are pricing McIlroy's hole scores differently than the broader betting market.
On Kalshi, this market is priced through continuous order-book trading, where buyers and sellers submit bids and offers for each hole outcome. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The platform matches trades in real time, and the last executed price becomes the current market odds. Traders can see the full depth of buy and sell orders, allowing them to assess liquidity and execute at their preferred price. This transparent pricing mechanism ensures that odds reflect genuine supply and demand rather than algorithmic adjustments alone.
This market resolves around Jul 18, 2026, once Rory McIlroy completes Round 1 and the hole-by-hole scores are verified against credible public sources. The outcome for each hole is determined by the official score recorded for that specific hole during his first round. Traders who correctly predicted the hole score will receive their payout based on the final verified result. Resolution timing depends on when official scoring is published and confirmed by the tournament.
Course conditions such as weather, wind, and pin placements can shift odds as traders reassess difficulty for each hole. Real-time scoring updates during Round 1 will cause significant price swings, especially as McIlroy progresses through the course. Pre-tournament news about McIlroy's form, recent practice rounds, or equipment changes may influence early trading. Competitor performance and leaderboard position could also affect trader sentiment about his scoring pace, indirectly moving odds on individual hole outcomes.