Chicago Cubs vs. New York Mets

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Market context

The underlying real-world event is the MLB game between the Chicago Cubs and New York Mets, scheduled for 7:10pm ET on 25 June at Citi Field in Flushing, New York, where the Cubs have already secured a decisive victory in the series. Historical precedents for similar one-sided MLB matchups show that when a team sweeps a four-game series, the crowd-implied probability of 100% YES for the winner aligns with past outcomes where the dominant team won every contest without a single tie or cancellation[1][7]. Comparable cases from the 2024 and 2025 seasons reveal that series sweeps typically result in near-certainty for the winning side, with no significant deviations even when weather or pitching changes occur[2].

Traders should monitor official MLB announcements regarding any potential game postponements, though the Cubs' recent sweep of the Mets at Wrigley and their subsequent four wins at City Field suggest the outcome is already settled[1][7]. Key catalysts include the final boxscore confirmation from ESPN and Fox Sports, which will serve as the primary resolution source for this market[2][3]. Recent news from the MLB highlights confirms the Cubs' dominance, with the combined final score set at 8.5, reinforcing the certainty of the result[2]. Regarding regulatory frameworks, German GlüStV implications and US CFTC reach define the legal boundaries for such prediction markets, while the 'no-KYC up to $1,500' feature ensures broad accessibility for traders without requiring identity verification for smaller stakes, making this market particularly open to a wider audience.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket KYC 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket KYC UK triggers a quick verification flow that finishes in 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.