Detroit Tigers vs. Pittsburgh Pirates

Platform comparison

Market context

The Detroit Tigers face the Pittsburgh Pirates on 17 August at 7:05 PM ET in a regular-season matchup. The 51% crowd-implied probability at this market reflects near-parity between the two teams, though sportsbooks typically favour the Tigers slightly in moneyline odds. This divergence suggests prediction-market participants are pricing in factors beyond standard win-probability models, or that the market remains genuinely uncertain about team form heading into late August.

Historical context shows that late-season MLB games between non-contending teams often exhibit compressed odds across platforms. The Tigers and Pirates have both struggled in recent seasons, making comparative strength assessments difficult. When both clubs sit below .500, traditional sportsbook models struggle to differentiate, pushing implied probabilities closer to 50-50 than early-season matchups would suggest. The current 51% reading aligns with this pattern, indicating traders view this as a coin-flip scenario rather than a decisive mismatch.

Key variables include roster availability and recent performance trends. Injury reports released within 48 hours of game time typically shift these odds meaningfully, particularly if either team's starting pitcher is affected. Weather conditions at the venue and recent head-to-head records matter less in August when both clubs are often managing workload and development priorities. Traders should monitor official MLB injury bulletins and any late lineup adjustments, as these frequently trigger repricing across prediction markets before sportsbooks adjust their lines.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.