New York Mets vs. Philadelphia Phillies

Platform comparison

Active sub-markets

Market context

The New York Mets travelled to Philadelphia needing a result against a Phillies side that entered the game with the better record and home-field advantage. ESPN listed the Phillies at 40-35 and the Mets at 34-41 before first pitch, which helps explain why the market has pushed to a very high **98% YES** on Philadelphia[3][5].

That probability is also easier to read against the recent head-to-head and wider form. ESPN’s game page said the Mets were already leading the series 1-0, while an earlier June meeting on 18 June ended 7-2 to Philadelphia, showing how quickly the matchup has swung between low-scoring and more comfortable wins[5][2]. The Athletic’s box score snapshot pointed to both clubs as middling offences by season averages, with the Mets and Phillies both below .240 batting and around four runs per game, which usually leaves a one-game market sensitive to pitching quality and late lineup changes rather than raw season totals[4].

For traders, the main catalysts are the confirmed starting pitchers, any late scratches, and whether either club rests regulars after a recent stretch of divisional games. Fox Sports’ game listing showed the betting market pricing Philadelphia as a clear favourite before the result, but any change to the announced starter or a key absence in the top third of the order would still matter because these teams have been close enough in run production that small roster edits can move win probability quickly[1][4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track New York Mets vs. Philadelphia Phillies 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.