Pronóstico: Philadelphia Phillies vs. New York Mets

Platform comparison

Active sub-markets

Market context

The Philadelphia Phillies face the New York Mets in a crucial MLB matchup tonight at 4:10 PM ET, with the Phillies currently trailing in the on-chain probability market at 36% YES to win. This figure sits notably below the 44% implied win probability seen in traditional betting odds, suggesting a divergence between Polymarket traders and conventional sportsbook sentiment. The contract resolves on the Polygon network using USDC, where conditional tokens lock the outcome based on the official final statistics released by MLB.

Historically, such a probability gap often precedes a swing when a team like the Phillies, who won the last meeting 2–1 on June 26, faces a Mets squad struggling with a home slide. In comparable late-June MLB clashes, a 8% underperformance in prediction markets relative to betting lines has frequently corrected post-game when the favourite’s bullpen shows fatigue, a pattern that traders should monitor closely.

Key catalysts include the confirmed starting pitchers and any late-injury announcements affecting the Phillies’ bullpen, which is already flagged as a potential weakness. Recent analysis from DocSports highlights the Mets as -135 home favourites with a total set at 8.5 runs, indicating high offensive expectations that could sway the final result if the Phillies’ pitching falters early. Traders should watch for real-time updates on the starting lineups before the settlement window closes on 4 July 2026.

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Methodology

We track Pronóstico: Philadelphia Phillies 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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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?

PolyGram 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.

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 PolyGram?

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