New York Yankees vs. Athletics

Platform comparison

Active sub-markets

Market context

The New York Yankees travel to Oakland on 31 May for a day game against the Athletics, with first pitch at 4:05 PM ET. The market currently reflects a 62% implied probability of a Yankees victory, suggesting moderate confidence in the favourite but meaningful uncertainty around the outcome. Settlement depends on official MLB final statistics, with postponement extending the resolution window through 7 June and cancellation or ties triggering a 50-50 split.

Historical matchup data and recent form provide the foundation for calibrating this probability. The Yankees hold a significant head-to-head advantage against Oakland over recent seasons, and the Athletics have struggled with consistency in 2024, creating structural reasons for the Yankees' elevated odds. However, day games following night games present scheduling asymmetries worth tracking—Oakland's rest advantage or fatigue patterns in the Yankees' schedule could shift expected value. Comparable single-game markets between division mismatches typically settle within the 55–70% range for the stronger team, placing this at the lower end of that band.

Traders implementing conditional orders or automated monitoring should flag pitching assignments and late-inning roster changes as primary catalysts. Injury reports released within 24 hours of game time frequently shift single-game probabilities by 3–8 percentage points, particularly if key relievers or designated hitters become unavailable. Weather conditions at Oakland Coliseum—wind direction and temperature affecting ball carry—merit programmatic tracking given the venue's sensitivity to atmospheric variables. Real-time line movement across major sportsbooks provides a secondary signal; sharp money typically flows 4–6 hours before first pitch.

Methodology

We track New York Yankees vs. Athletics 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

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 Polymarket App 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.

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 Polymarket App UK?

Zero. Polymarket App UK 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.