New York Mets vs. Cleveland Guardians

Platform comparison

Market context

The Mets–Guardians game in Cleveland is priced on Polymarket at **48% YES** for New York, which is broadly in line with a near coin-flip market rather than a strong directional view. On-chain, that price reflects USDC-denominated trading in conditional tokens on Polygon, so the contract is simply expressing the market’s current estimate of a Mets win, not the margin or total. [10][17]

That 48% sits close to outside pricing that has generally made Cleveland a modest favourite, with recent moneyline references clustering around Guardians -150 to -156 and Mets roughly +128 to +140. Model-based previews have also been mixed: some have Cleveland around 52-53% to win, while others have the Mets nearer 47-52%, which is consistent with a market that can move quickly on pitching and lineup news rather than on season-long records alone. [1][3][13][14][15][16]

The main catalysts are the confirmed starters, any late scratch, and the final pre-game lineups, because a change in either club’s run expectancy can reprice a one-game market sharply before first pitch. Traders should also watch for postponement risk, as a delay keeps the market open until the game is completed, while a cancellation or tie would resolve the contract 50-50 under the stated rules. The scheduled start is 1:10pm ET, so the practical window for late information is right up to the line-up card and final injury reports. [5][7][17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track New York Mets vs. Cleveland Guardians across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.