Chicago Cubs vs. New York Mets

Platform comparison

Active sub-markets

Market context

On 25 June at 7:10pm ET, the Chicago Cubs face the New York Mets in a pivotal MLB contest at Citi Field, with the Cubs holding a 42–37 record against the Mets’ 34–45. The prediction market currently implies a 52% chance for a Cubs win, a figure that diverges meaningfully from sportsbook moneylines favouring the Cubs at –110 and numberFire’s algorithm projecting a 57% Cubs win probability[1][2]. This 5% gap between the crowd-implied probability and the algorithmic consensus mirrors historical patterns where prediction markets lag slightly behind sharp sportsbook lines during early-season slumps, particularly when one team (here, the Mets) is underperforming despite a strong eighth-ranked ERA of 4.24[2][8].

Traders should monitor two key catalysts before settlement: first, any late-injury announcements for Cubs starters, given the team’s 35–13 record in games when their rotation is intact[8]; second, the Mets’ attempt to break their current losing slide, a psychological factor that has historically shifted odds by 3–4% in similar June matchups[2]. The over/under total of 8.5 runs, priced at –114 for the over, suggests a tight defensive battle, but a single bullpen collapse could swing the outcome decisively[1]. Recent coverage from ESPN highlights the Mets’ urgency to close out the series, a narrative that may temporarily inflate their implied win probability despite their inferior record[2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Chicago Cubs vs. New York Mets on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Best Prediction Markets 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.

Is this market available outside the US?

Best Prediction Markets UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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, Best Prediction Markets UK triggers a quick verification flow that finishes in minutes.