New York Yankees vs. Boston Red Sox

Platform comparison

Active sub-markets

Market context

The New York Yankees face the Boston Red Sox at Fenway Park on 27 June 2026 for a 1:10pm ET MLB game, with the market currently pricing a Yankees win at just 9%. This low probability reflects the Red Sox’s dominant start to the series, having already won the first two games of the four-game set by scores of six-to-one and five-to-one, with the Red Sox outscoring the Yankees by five runs in each contest[1][8]. Historically, when a team wins the opening two games of a series by such margins, the third game often sees continued momentum for the victor, especially in a rivalry where home-field advantage at Fenway has repeatedly skewed outcomes in favour of Boston during mid-June slumps.

Traders should monitor the Yankees’ pitching rotation announcements and any late-injury updates on key starters, as the Red Sox’s recent offensive surge has been built on consistent hitting against weakened Yankees lineups[3]. ESPN’s live coverage notes the Yankees are 48-33 overall but 26-18 away, while the Red Sox sit at 34-46 with a poor 14-25 home record, suggesting a potential reversal if the Yankees’ away form holds[3]. A beat reporter from the Boston Globe recently highlighted that the Red Sox’s bullpen has been stable since a mid-week coaching adjustment, reducing blown leads in late innings[3]. Watch for any pre-game weather delays or roster changes, as these dependencies could shift the 9% probability significantly before the settlement window closes on 4 July 2026.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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

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

Is this market available outside the US?

Sport Prediction 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 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 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.