Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
54% | 46% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
54% | 46% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
| Tampa Bay Rays vs. New York Yankees | 54% YES | 47% NO |
| NRFI | 0% YES | 100% NO |
| Spread -1.5 | 37% YES | 63% NO |
| Spread -2.5 | 25% YES | 76% NO |
| Spread -3.5 | 16% YES | 84% NO |
| Spread -2.5 | 18% YES | 82% NO |
Market context
On 24 May at 1:35 PM ET, the Tampa Bay Rays travel to face the New York Yankees in a regular-season Major League Baseball matchup. The market currently prices a Rays victory at 45 per cent, reflecting modest underdog status despite Tampa Bay's competitive standing in the AL East. Settlement occurs by 31 May 2026, with the official MLB box score serving as the authoritative resolution source. Postponements keep the market open until completion; cancellations without rescheduling or tied games resolve 50–50.
Historically, Rays–Yankees matchups have favoured New York in aggregate win percentage, though Tampa Bay has demonstrated capacity to compete effectively in division play. The 55 per cent implied probability for a Yankees win aligns with their structural advantages in payroll and roster depth, yet the Rays' recent performance trajectory and home-field dynamics merit scrutiny. Comparable division contests in 2024–2025 showed tighter probability distributions than headline records suggested, indicating that single-game outcomes often diverge from season-long trends.
Traders should monitor roster announcements through 24 May, particularly injury status of key pitchers or position players on either side. Weather conditions at the scheduled venue and any last-minute lineup adjustments could shift expected run production. Recent form—win streaks, bullpen availability, and head-to-head pitcher matchups—typically drives late-market movement. From a regulatory perspective, this market remains accessible under the $1,500 no-KYC threshold in most US jurisdictions, though German GlüStV frameworks and CFTC reach considerations apply to cross-border traders. Verification requirements depend on aggregate exposure across platforms rather than single-event stakes.
Methodology
We track Tampa Bay Rays vs. New York Yankees on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
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.
- 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.
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