Detroit Tigers vs. Tampa Bay Rays

Platform comparison

Active sub-markets

Market context

The Detroit Tigers travel to Tampa Bay on 1 June for an evening fixture against the Rays, with Polymarket currently pricing a Tigers victory at 39 per cent (implied by the YES token trading around 0.39 USDC on Polygon). This represents a modest underdog position for Detroit, reflecting the market's assessment that Tampa Bay holds the edge in this matchup. The settlement window extends to 8 June at 22:40 UTC, allowing for postponements common in early June scheduling.

Historical matchup data shows the Rays have maintained a competitive record against Detroit over recent seasons, though neither team has established decisive dominance in head-to-head play. The Tigers' 2024 performance trajectory and current roster composition relative to Tampa Bay's pitching depth will anchor trader positioning. Conditional token mechanics on Polygon mean positions settle directly against the official MLB final result, with no ambiguity unless the game is cancelled entirely—a rare occurrence that would trigger 50-50 resolution.

Traders should monitor starting pitcher announcements, which typically confirm 48 hours before game time, as pitching matchups materially shift win probability. Injury reports for key position players on both rosters warrant attention, particularly any late-game roster moves. Weather conditions in Tampa Bay during early June rarely force postponements, though tropical systems can emerge. Recent form entering June—win-loss streaks and run differential—will provide concrete data points for recalibrating positions as the fixture approaches.

Methodology

We track Detroit Tigers vs. Tampa Bay Rays 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

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 Kalshi UK, 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?

Kalshi UK 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 Kalshi UK?

Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.