Detroit Tigers vs. Tampa Bay Rays

Platform comparison

Active sub-markets

Market context

The Detroit Tigers face the Tampa Bay Rays on 1 June at 6:40 PM ET in a regular-season MLB matchup. The 39% implied probability for a Tigers victory reflects moderate underdog status, though the settlement window extends to 8 June to accommodate potential postponements. Across major prediction platforms, this market reveals structural differences: Polymarket displays the probability directly, whilst Kalshi and Betfair express equivalent odds in decimal format (roughly 1.64 for a Tigers win at current levels). Smarkets similarly uses decimal odds but charges lower commissions on matched bets. KYC requirements vary significantly—Kalshi enforces stricter US residency verification than Polymarket, which affects liquidity pools and available trading hours for international participants.

Historical context matters here: the Tigers and Rays have traded divisional dominance over the past decade, with Tampa Bay's lean payroll model producing consistent competitive results despite lower win totals. The 2024 season standings and recent head-to-head records should inform baseline expectations, though mid-season form often diverges sharply from preseason projections. Key catalysts include roster announcements in the days before 1 June—injuries to starting pitchers or late trades can shift probabilities substantially. Monitor official MLB injury reports and team rosters through 31 May; a Tigers pitcher absence could widen the Rays' advantage, whilst Tampa Bay's bullpen depth issues (if publicised) might support longer odds on Detroit. Weather conditions at the venue and any schedule changes announced by MLB warrant attention, as these directly trigger the postponement clause in the settlement terms.

Methodology

This page compares Detroit Tigers vs. Tampa Bay Rays specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative, 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?

Polymarket Alternative 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.

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.