Tampa Bay Rays vs. New York Yankees

Platform comparison

Active sub-markets

Market context

The Rays travel to Yankee Stadium on 23 May for an afternoon fixture, with Polymarket currently pricing a Tampa Bay victory at 43 per cent (USDC on Polygon). This represents a 7-point underdog position against New York, reflecting the Yankees' stronger regular-season record and home-field advantage. The conditional tokens settle based on official MLB final statistics, with the resolution window extending to 30 May to accommodate any postponements.

Historical matchups between these franchises show the Yankees have dominated recent seasons, winning roughly 55 per cent of contests since 2020. However, the Rays' pitching-focused roster has periodically upset favoured opponents in single games, particularly when deploying their top-tier starter rotation. The current 43 per cent probability sits within the typical range for a road underdog facing a stronger team, suggesting the market has priced in Tampa Bay's structural disadvantages without overweighting them.

Traders should monitor starting pitcher announcements, expected within 48 hours of the game. Injury reports from both rosters—particularly any late-breaking developments affecting key position players—will move the conditional token prices materially. Weather conditions at Yankee Stadium on game day may also shift probabilities, as afternoon games in May occasionally face rain delays that could affect either team's preparation. Recent form matters: the Yankees have won their last four home games against Tampa Bay, a streak that typically reinforces market pricing favouring New York.

Methodology

We track Tampa Bay Rays vs. New York Yankees 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

Is this market available outside the US?

PolyGram 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.

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 PolyGram?

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

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.

Do I need to KYC for this market?

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