Boston Red Sox vs. New York Mets

Platform comparison

Market context

A Major League Baseball game between the Boston Red Sox and New York Mets is scheduled for 7:15pm ET tonight at Citi Field in Queens. In prediction markets, a YES share pays out if the Boston Red Sox win this specific match, while a NO share pays out if they do not. The crowd currently implies a 43% chance of a Red Sox victory, meaning traders are pricing the Mets as the more likely winner for this evening’s contest.

Historical betting patterns for mid-season MLB games often show home favourites with winning records above 50% holding a 50–55% implied probability, yet the Red Sox’s current 41–48 record and 24–21 away split suggest vulnerability despite playing away [1]. The Mets, sitting at 38–54 with a 19–25 home record, are also underperforming, which explains why the probability is not heavily skewed toward either side. In comparable 2025–2026 matchups between teams with similar win-loss splits, final probabilities typically settle between 40% and 55% for the away side, making the current 43% figure consistent with past outcomes for evenly mismatched opponents.

Traders should monitor the official starting lineups released before 6:45pm ET, as pitcher matchups heavily influence game outcomes in MLB. Any delay or postponement due to weather will keep the market open until completion, while a cancellation without a make-up game resolves the market at 50–50 [1]. ESPN’s live coverage confirms both teams are active for tonight’s game, with no reported roster changes affecting the primary resolution source [1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Market UK. 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 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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.