Tampa Bay Rays vs. New York Yankees

Platform comparison

Active sub-markets

Market context

The Tampa Bay Rays travel to face the New York Yankees on 24 May at 1:35 PM ET in a regular-season MLB matchup. The current 48% implied probability for a Rays victory reflects a near-even assessment, though the Yankees enter as slight favourites in traditional sportsbooks. Across prediction market platforms, this matchup reveals structural differences: Kalshi's binary contract format displays the probability directly, whilst Betfair's decimal odds (roughly 2.08 for a Rays win at current levels) require conversion, and Smarkets' fractional presentation appeals to different trader intuitions. Fee structures diverge notably—Kalshi charges a flat commission on winnings, Polymarket applies a 2% settlement fee, and Betfair's commission scales with profit—making the effective payout on identical outcomes materially different depending on platform choice.

Historical head-to-head records between these franchises show the Yankees have dominated recent matchups, winning approximately 60% of contests over the past five seasons, yet the Rays' pitching-focused roster has produced occasional upsets in low-scoring affairs. The current probability sits below the Yankees' historical win rate, suggesting either market recognition of the Rays' specific strengths or uncertainty around roster availability.

Traders should monitor injury reports released before first pitch, particularly regarding starting pitchers and key position players. Weather conditions at Yankee Stadium—afternoon games frequently favour hitters—and any last-minute roster adjustments warrant attention. The settlement window extends to 31 May, allowing for postponement resolution if weather forces a reschedule.

Methodology

We read Tampa Bay Rays vs. New York Yankees from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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.