2026 U.S. Open: To Make the Cut

Platform comparison

Active sub-markets

Market context

The 2026 U.S. Open is being played at Shinnecock Hills from 18 to 21 June, and the cut will be applied after 36 holes with only the top 60 players and ties advancing to the weekend.[4][1] That structure matters for this market because “make the cut” is a binary event that depends on the player’s score relative to the field rather than on final finishing position.[1][4]

A 0% crowd-implied probability is best read as a near-certain “No” outcome unless the listed player is already eliminated by score, withdrawal, or another rules-based bar to weekend qualification. Comparable cut-line coverage at Shinnecock has pointed to a difficult setup, with DataGolf estimates around four-over par and some reports putting that line at 93% likelihood, which helps explain why markets can move sharply around live leaderboard swings and late-day scoring.[2][1][5] For accessibility, a no-KYC threshold up to $1,500 generally means smaller-stake participation can be available without identity checks, but the market remains subject to account, geography, and platform controls.

Traders should watch the USGA leaderboard, tee-time completion, weather delays, and any injury or withdrawal notices, because these can change whether a player is still in contention for the weekend cut.[4][2] On the regulatory side, German GlüStV rules can affect whether access is restricted or treated differently for users in Germany, while US CFTC reach is the relevant compliance backdrop for US-facing prediction-market activity; in practice, those issues matter less for the sporting outcome than for who can legally or operationally access the contract.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track 2026 U.S. Open: To Make the Cut on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Polymarket KYC UK?

Zero. Polymarket KYC UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.