Detroit Tigers vs. Baltimore Orioles

Platform comparison

Active sub-markets

Market context

The Detroit Tigers are due to visit the Baltimore Orioles on 22 May, with the market set on the outright winner in Baltimore. The current crowd price of 45% for Detroit is broadly a coin-flip view, which is consistent with a single MLB game where home field, starting pitching and late line-up changes can move the outcome more than the standings do. On platforms such as Polymarket, that 45% is shown as implied probability; on Betfair and Smarkets the same view is usually expressed as decimal odds, with the effective take-out embedded differently, while Kalshi quotes contract prices directly and can be more straightforward to map to probability. For British users, access also matters: Polymarket and Betfair differ sharply in jurisdictional availability and KYC, whereas Smarkets and Kalshi have their own verification and regional constraints.

Recent meetings suggest this pairing can swing quickly. Detroit swept a doubleheader against Baltimore in April 2025, with the Tigers’ bats doing enough in both games, but that is only a limited historical guide because MLB matchups depend heavily on the day’s pitcher and line-up. ESPN’s listing for a later Orioles-Tigers game in late July 2026 underlines that these clubs are scheduled to meet again, but it does not affect this result; what matters for this market is the May 22 contest and whether the game is completed, postponed, or altered by weather or scheduling changes. Traders on any exchange should watch the confirmed starters, bullpen availability after recent games, and any last-minute scratches, since those updates can shift the live probability more sharply than broader season form.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Detroit Tigers vs. Baltimore Orioles 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 PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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.