Boston Red Sox vs. New York Mets

Platform comparison

Market context

The Boston Red Sox face the New York Mets in a regular-season MLB clash at 7:15PM ET on 10 July, with the market currently pricing a Red Sox victory at 43% YES. This implies the Mets are the favourite, aligning with their superior head-to-head record in recent years; while the Red Sox hold a slight all-time advantage (25–19), the Mets have won four of their last six meetings against Boston, including a 4–2 record in 2025 [2][6]. Historically, when the Mets enter as favourites against the Red Sox in interleague play, they have converted roughly 52% of such matchups, suggesting the current 57% implied probability for the Mets may be slightly undervalued relative to the trend [1].

Traders should monitor the starting lineups announced by 6PM ET, particularly the pitching assignments, as the Red Sox’s bullpen has shown vulnerability in night games this season, while the Mets’ ace has a 2.8 ERA against left-handed hitters [5]. A key catalyst is the weather forecast for New York; any rain delay could shift momentum, given the Mets’ stronger performance in humid conditions compared to the Red Sox’s reliance on dry-ball hitting [5]. Recent reports indicate the Mets’ manager is considering a defensive shift in the late innings, which could impact run-scoring efficiency if the game extends beyond the seventh [5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Boston Red Sox vs. New York Mets across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.