Tampa Bay Rays vs. New York Yankees

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Active sub-markets

Market context

The Tampa Bay Rays face the New York Yankees on 23 May at 1:35 PM ET in a regular-season MLB matchup. The market implies a 47% probability of a Rays victory, reflecting near-parity in perceived win likelihood. Settlement occurs on 30 May at 17:35 UTC, allowing five days post-game for official MLB statistics to be finalised and any postponements to be resolved.

Historically, Rays–Yankees matchups have shown volatility in prediction markets owing to roster depth disparities and ballpark effects at Tropicana Field versus Yankee Stadium. The Yankees' larger payroll typically correlates with tighter odds, yet the Rays' recent competitive records in division play have prevented consensus favourites. A 47% YES probability suggests traders view this as a genuine toss-up rather than a strong lean toward either side, consistent with regular-season games where both teams field capable rosters and pitching matchups carry substantial weight.

Key catalysts include confirmed starting pitchers, injury updates to position players, and recent offensive form in the week preceding 23 May. Weather conditions at Tropicana Field—indoor facility—eliminate weather risk, but travel schedules and rest days for both clubs warrant monitoring. From a regulatory standpoint, this market remains accessible under the German GlüStV framework for EU traders and falls within CFTC reach for US participants; the no-KYC threshold of $1,500 applies to individual wagers on this event, meaning traders can participate without identity verification up to that stake level, though aggregate account activity may trigger compliance requirements.

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 PolyGram, which mirrors the Polymarket order book directly.

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.

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 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.

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.