New York Yankees vs. Boston Red Sox

Platform comparison

Active sub-markets

Market context

The New York Yankees face the Boston Red Sox in an MLB game scheduled for 27 June at 1:10 PM ET, with the Yankees needing to win for the contract to resolve favourably. On Polymarket, this Yankee-win position currently trades at a 9% implied probability, priced in USDC on the Polygon network using conditional tokens. This low valuation reflects the market’s view that the Yankees are unlikely to overcome the Red Sox in this matchup, despite the Yankees’ 48-33 season record and .243 batting average[1].

Historically, similar 9% probabilities in MLB head-to-head contracts have resolved against the favoured team when the underdog holds a strong home record and the favoured side struggles with divisional opponents. The Red Sox are 13-25 against the spread at home, while the under is 13-11-1 when the Yankees play a divisional foe[4]. These comparable cases suggest the current price may be misaligned if the Yankees’ recent form improves or if the Red Sox’s home weakness persists.

Traders should monitor pitcher projections for the next ten days and any late injury announcements, as these are key catalysts for outcome shifts[2]. Brad’s latest MLB pick favours the Yankees, citing their offensive consistency, though the Red Sox’s 2-0 series lead in this matchup adds uncertainty[5]. The settlement window closes on 4 July 2026, so on-chain liquidity and USDC stability will influence entry timing for those seeking exposure before the game concludes.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track New York Yankees vs. Boston Red Sox 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

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

Where can I trade this market with the lowest fees?

On Polymarket Legit?, 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.

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 Polymarket Legit??

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in 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.