PGA Tour: The Open Championship Winner

Platform comparison

Market context

The 2026 The Open Championship at Royal Troon will crown the golfer who secures the Claret Jug, with Scottie Scheffler installed as the favourite to repeat his 2025 victory. Traditional bookmakers like BetVictor list Scheffler at 4/1, implying a 20% win chance, while US sportsbooks price him at +300, suggesting a 25% probability [1][2]. The current crowd-implied probability of 11% on this specific market sits notably below these external benchmarks, creating a divergence that traders comparing Polymarket against Kalshi or Betfair must scrutinise.

Historically, Open winning probabilities for top favourites often fluctuate between 15% and 30% depending on course conditions and player form, meaning an 11% implied chance for Scheffler represents a potential underpricing relative to the 25% figure cited by major sportsbooks [2][4]. In previous major cycles, markets on platforms like Smarkets have frequently corrected such gaps as liquidity deepens, whereas Kalshi’s binary structure often locks in tighter spreads earlier. This specific gap suggests the market may be reacting to unlisted variables or fee structures that differ from the decimal odds offered by traditional books.

Traders should monitor Scheffler’s official schedule confirmation for Royal Troon and any injury updates, as elimination rules here trigger immediate "No" resolutions unlike standard sports bets [1]. Recent coverage confirms Scheffler aims to defend the title, but his participation remains the primary catalyst for probability shifts [4]. Watch for announcements regarding weather at Troon and tee-time allocations, as these dependencies often drive rapid re-pricing on prediction platforms compared to the slower adjustments seen in traditional betting exchanges.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares PGA Tour: The Open Championship Winner specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.