PGA Tour: The Open Championship Winner

Platform comparison

Market context

The 2026 Open Championship begins at Royal Birkdale on Thursday, 16 July, with the tournament concluding on Sunday, 19 July, just before the market’s settlement deadline. Scottie Scheffler enters as the favourite to defend the Claret Jug he won in 2025, while Rory McIlroy, the World No. 2, sits as the second favourite with bookmakers [1][2]. The current crowd-implied probability of 11% YES for a specific listed player suggests the market is pricing in a tight contest between these two leaders rather than a dominant solo performance.

Historically, Open probabilities at this stage often reflect recent major form and course fit, with favourites like Scheffler holding elevated odds when defending a title won on similar coastal terrain. Comparable cases from recent years show that 10–15% implied probabilities for top contenders typically resolve to “No” when the field is deep and the gap between first and second favourite is narrow, as seen when multiple players finish within two shots of the lead. The market’s current stance aligns with this pattern, where the leading players share the burden of expectation rather than one absorbing it entirely.

Traders should monitor Scheffler’s and McIlroy’s performance in the Scottish Open warm-up event, which ends just days before the Open, as recent winners there often carry momentum into Birkdale [1]. Key catalysts include final tee-time announcements on Friday and any weather disruptions that could alter scoring conditions on the coastal course. Betting odds remain fluid, with Scheffler listed at +700 and McIlroy at +750, meaning a single poor round could shift the probability landscape significantly before the final putt [1].

Sources: 1 · 2 · 3

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for PGA Tour: The Open Championship Winner plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.