PGA Tour: 3M Open Top 20

Platform comparison

Market context

The 3M Open is under way at TPC Twin Cities in Blaine, with the PGA Tour listing a July 23-26 schedule and an $8.8 million purse. That matters because this market only pays out if the player finishes inside the top 20, ties included, on the official PGA Tour result sheet by the settlement deadline.[1][3]

An 81% crowd-implied yes price is high for a top-20 prop, but it is easier to read against the strength of this field and the scoring environment than as a stand-alone number. Tournament officials said the 2026 field includes major champions, PGA Tour winners and 53 of the top 125 in the Official World Golf Ranking, while 8 of the top 50 were highlighted among the contenders, so the market is implicitly pricing a player with genuine top-end form rather than a random mid-tier entrant.[2][4] For context, recent winners at this event have gone very low, with Kurt Kitayama winning at 23 under in 2025 and Jhonattan Vegas at 17 under in 2024, which keeps top-20 access relatively open for strong ball-strikers who avoid a poor round.[3]

For platform comparison, Polymarket-style pricing is usually shown as an implied probability, while Kalshi and most exchange-style books such as Betfair and Smarkets are easier to compare in decimal odds terms, with the same 81% broadly equating to about 1.23 before fees. The practical divergence is in friction: Kalshi’s KYC and account access are US-centric, whereas Betfair and Smarkets operate as regulated betting exchanges in more markets but typically deduct commission from winnings, so the same top-20 view can look different after fees and local eligibility. The main catalysts now are the live leaderboard, cut-line dynamics, and any late official correction from the PGA Tour results page, since the market resolves strictly off the published final standings.[1][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares PGA Tour: 3M Open Top 20 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 UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

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 UK 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.