Detroit Tigers vs. Baltimore Orioles

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Active sub-markets

Market context

Detroit and Baltimore meet in an MLB regular-season game on 22 May, with the market pricing a Detroit win at 45% YES and therefore leaving Baltimore as the slight implied favourite. That sits in the range of a genuine coin-flip spot rather than a strong edge case: in baseball, small changes in starting pitchers, bullpen availability and line-up strength can move the true price more than the market sometimes reflects. The contrarian angle is that 45% suggests the Tigers are being treated as the underdog, so any support for Detroit is really a view that the gap is narrower than consensus, not a broad edge on outright form.

Recent comparable meetings have tended to be volatile, and Baltimore’s home setting is a key read-through if the Orioles are again asked to justify favourite status. The practical lesson from similar AL match-ups is that the first seven innings can matter more than season-long records, especially when one club is carrying a taxed relief group or a patched-up rotation. Traders should watch the confirmed starters, late batting-order changes and any bullpen usage from the previous two nights, as those are the main dependencies that can shift the fair price before first pitch.

There is also a scheduling factor to keep in view: if weather pushes the game back, the market stays open until completion, so the settlement risk moves with any postponement rather than ending on the original date. A recent YouTube preview on the fixture leaned Baltimore at home, which broadly matches the current crowd lean towards the Orioles, but it does not by itself create value. On the numbers alone, the consensus sits with Baltimore, while any Tigers case rests on finding line-up or pitching news that narrows the home edge.

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Methodology

This page reviews Detroit Tigers vs. Baltimore Orioles 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.