Tampa Bay Rays vs. New York Yankees

Platform comparison

Active sub-markets

Market context

The Yankees travel to Tampa Bay for a 1:35pm ET start on 23 May, with the market currently pricing the Rays at 47 per cent implied probability. This represents a slight underdog position for the home side, reflecting the Yankees' stronger recent form and roster depth. The settlement window extends to 30 May, allowing for postponements common in late May weather conditions along Florida's Gulf Coast.

Historical matchups between these division rivals show the Yankees have won 61 of their last 100 meetings, though the Rays' home record against New York has been competitive. The current 47 per cent probability sits close to the Rays' actual win rate in this fixture over recent seasons, suggesting the market has priced in baseline divisional dynamics without significant adjustment for May-specific factors. The consensus appears to favour the Yankees' consistency, yet the Rays' home-field advantage and pitching depth create a value case for backing Tampa Bay at near-even odds.

Traders should monitor starting pitcher assignments, as both teams' rotation health significantly impacts single-game outcomes. Recent reports indicate the Yankees have managed several injuries to their bullpen, whilst the Rays' pitching staff remains relatively intact heading into late May. Weather conditions at Tropicana Field present no variable, given the domed stadium, but travel fatigue and the early afternoon start time may affect lineup construction. Any late roster moves or injury updates released before first pitch could shift the probability materially.

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

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

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.

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.

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.

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.