Tampa Bay Rays vs. New York Yankees

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Market context

The Rays and Yankees are due to meet in New York on 22 May, with the market currently pricing Tampa Bay at 43% to win. That sits below a pure coin-flip despite the clubs being close in the standings, which usually reflects a home-field edge for the Yankees and the market’s preference for the more cash-active side when a matchup can be funded quickly through familiar rails. Where deposits are instant by card, Klarna or USDC, and withdrawals are straightforward via SEPA or crypto, books tend to deepen faster and prices can move more cleanly off team news.

Recent meetings have not offered much comfort to Yankees backers. Tampa Bay swept a three-game set in April, including two 5-4 wins, one of them in 10 innings, so the head-to-head form leans slightly towards the Rays even before you factor in current availability. The Yankees have also been managing pitching disruption: ESPN and Flashscore both noted Max Fried’s injured-list stint in mid-May, and that sort of rotation uncertainty often matters more in a short series than season-long records do.

For traders, the key catalysts are line-up confirmation, any late pitching changes, and whether the game proceeds on time, since postponement would keep the market open. The market also has a settlement window running through 29 May, so any delay or suspended game would extend the timing risk rather than remove it. In practice, the biggest moves tend to come after official starters are announced and just before first pitch, when on-ramp friction matters least and fresh money can still flow in quickly.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Tampa Bay Rays vs. New York Yankees across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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.

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.

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.