2026 U.S. Open: To Make the Cut

Platform comparison

Active sub-markets

Market context

The listed player has already been eliminated from contention for the 2026 U.S. Open at Shinnecock Hills, making the 0% YES price on Polymarket a direct reflection of on-chain certainty rather than abstract speculation. Today, the contract trades at zero USDC on Polygon, with conditional tokens confirming the outcome is locked before the settlement window closes on 21 June. This mirrors recent collapses where high-profile entrants like Bryson DeChambeau and Jon Rahm failed the cut in 2026, as the live cut line stood at +4 over par with only 72 players advancing [1][6]. Historically, the U.S. Open cuts to the low 60 scores and ties after 36 holes, meaning any player outside this bracket is mathematically excluded, a rule that has consistently driven similar markets to zero when elimination occurs early [4][8].

Traders should monitor the official leaderboard updates and any late-course announcements from the USGA, though the tournament schedule confirms rounds concluded by Sunday, 21 June, leaving no room for reversal [2][3]. The primary catalyst is the final confirmation of the cut list, which will be published immediately after the second round, and any subsequent rulings on player eligibility or course conditions that might affect the result [5]. With the field already reduced and the cut line fluctuating between +3 and +4, the dependency is solely on the official USGA communication, which will resolve the market definitively [1]. No further action can alter the outcome, and the on-chain mechanics will settle the position automatically once the USDC transaction is confirmed.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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

Where can I trade this market with the lowest fees?

On Polymarket Legit?, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 does it cost to trade on Polymarket Legit??

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in 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.