Tampa Bay Rays vs. New York Yankees

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Active sub-markets

Market context

The Rays are in the Bronx on Friday night for the first game of a three-game set against the Yankees, with Tampa Bay listed around 44% on the crowd side despite arriving with the stronger overall record at 33-15 to New York’s 30-21. Recent meeting data points to a fairly even rivalry rather than a dominant side: the clubs have split long-run head-to-head results across more than 290 games, and their most recent comparable match-up in April went to extra innings, with Tampa Bay winning 5-4. That context matters for a market sitting near the mid-40s, where one or two runs of form can quickly outweigh season-long records.

The main catalysts are the game-day line-ups, pitching confirmation and any late injury updates, because the current total is tight and both teams have produced enough offence to swing either side of the result. NBC Sports’ preview notes the market opened with the Yankees as short home favourites and the model leaning Rays on the moneyline, while also shading under 8.0 runs, which fits a game where starting pitching and bullpen usage matter more than raw season batting lines. Traders should also watch whether either side rests regulars in the series opener after the travel day, as that can be decisive in a high-leverage divisional game with playoff-style pricing.

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Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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.