Boston Red Sox vs. New York Yankees

Platform comparison

Active sub-markets

Market context

The Boston Red Sox travel to Yankee Stadium on 6 June for an evening fixture against the New York Yankees, with Polymarket currently pricing the Red Sox at 49% implied probability on USDC-settled conditional tokens. This represents a near-even assessment, reflecting the competitive nature of AL East matchups where home-field advantage and recent form carry substantial weight in pricing.

Historically, Red Sox–Yankees contests have shown modest home-team bias in comparable regular-season games, with the visiting team winning approximately 44–46% of such meetings over the past five seasons. The current 49% for Boston suggests the market is pricing in either a slight expectation of visiting-team underperformance or a perception that the Yankees' roster composition favours them marginally. Recent head-to-head records and run-differential data from the 2024–2025 season will inform whether this probability reflects genuine competitive balance or market overweighting of historical narratives.

Traders should monitor starting pitcher assignments, which typically emerge 48–72 hours before first pitch and can shift conditional token valuations by 3–5 percentage points depending on ERA, recent performance, and bullpen availability. Injury reports released through official MLB channels and team announcements will affect both teams' win probabilities; any late scratches from either lineup could materially alter the contract's pricing on Polygon. Weather conditions at Yankee Stadium—particularly wind direction affecting fly-ball distances—and any roster moves announced between now and game time represent additional catalysts worth tracking before settlement closes on 13 June.

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 Kalshi UK, which mirrors the Polymarket order book directly.

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 Kalshi UK, 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 Kalshi UK?

Zero. Kalshi UK 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, Kalshi UK 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.