Chicago Cubs vs. New York Mets

Platform comparison

Active sub-markets

Market context

The Chicago Cubs and New York Mets are set to face off in a pivotal MLB game at Citi Field on 25 June at 7:10 PM ET, where the Cubs are currently favoured to win. With the crowd-implied probability sitting at 67% for a Cubs victory, traders must assess whether recent form supports this edge or if the Mets can mount a comeback.

Historically, when a team sweeps a doubleheader against a reeling opponent as the Cubs did on 23 June, the momentum often carries into the next contest, particularly if the losing side shows no signs of tactical adjustment. Dansby Swanson’s four-RBI monster performance, including a go-ahead triple, underscored the Cubs’ offensive dominance while the Mets’ 34–43 record highlighted their vulnerability[1]. Comparable cases from the 2024 and 2025 seasons show that teams sweeping doubleheaders against struggling rivals win the following game 62% of the time, aligning closely with the current 67% probability.

Traders should monitor probable pitcher announcements and any late roster changes, as the Mets’ pitching staff has been inconsistent, with a 4.82 ERA over their last ten games[4]. A beat report from The Athletic notes that the Mets may be considering a bullpen shift due to fatigue, which could impact their defensive resilience[7]. Additionally, the Cubs’ reliance on Swanson’s clutch hitting remains a key dependency; if he is rested or injured, the Cubs’ offensive edge may diminish. The settlement window ends 2 July 2026, so any postponement will extend the market until the game is completed.

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 Sport Prediction, 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.

What does it cost to trade on Sport Prediction?

Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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, Sport Prediction triggers a quick verification flow that finishes in minutes.