2026 U.S. Open: To Make the Cut

Platform comparison

Active sub-markets

Market context

The 2026 U.S. Open at Shinnecock Hills is already into the 36-hole weekend gate, and the practical question for a **make-the-cut** market is whether the named entrant is inside the top 60 and ties once the second round is complete. The USGA’s format is straightforward: there is no third-round recovery path, so the settlement hinges on the official cut sheet after 36 holes, not on whether a player later withdraws or finishes poorly on Saturday. [7][8]

For historical framing, Shinnecock has a habit of producing severe cut pressure rather than a soft landing. At the 2018 U.S. Open there, the cut was officially +4, with only 72 players advancing and several big names missing the weekend, which is useful context for interpreting an apparently low market probability. Current reporting on this week’s event shows DataGolf projecting a cut around +3 to +4, again signalling that the course is likely to punish marginal scoring and make borderline players vulnerable. [4][1][2]

For a programmatic trading workflow, the key inputs are leaderboard state, official cut announcements, and the USGA’s published cut rule; those are the only dependencies that should drive conditional orders or bot logic. The main catalyst is the 36-hole update from the championship itself, with live reporting indicating the cut line has been around +4 and therefore any player hovering near that number remains exposed until the round-2 leaderboard is finalised. [6][7][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews 2026 U.S. Open: To Make the Cut across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Bot UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Bot UK, 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.

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 Bot UK?

Zero. Polymarket Bot 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.