Detroit Tigers vs. Chicago White Sox

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Market context

The Detroit Tigers face the Chicago White Sox on 31 May at 2:10 PM ET in an American League Central matchup. The current 0% implied probability on this market represents an extreme outlier against conventional sportsbook pricing, which typically reflects meaningful uncertainty in regular-season baseball contests where either team retains genuine winning chances. This divergence warrants examination, as prediction markets and traditional betting lines often converge on major sporting events, yet here the market has assigned zero probability to one outcome.

Historical precedent suggests that 0% probabilities in baseball prediction markets occur primarily when technical errors, liquidity constraints, or settlement ambiguities create pricing distortions rather than reflecting genuine certainty about match outcomes. Regular-season MLB games rarely produce odds this skewed unless one team is mathematically eliminated or the event has been cancelled—neither condition applies here. The White Sox, despite their 2024 struggles, remain capable competitors in any single game, and pre-game injury reports, weather conditions, or pitching matchups routinely shift expectations by several percentage points.

Traders should monitor official roster announcements and starting pitcher confirmations through late May, as these factors historically move sportsbook lines by 3–5 percentage points in either direction. Weather forecasts for Chicago on 31 May merit attention, given that wind conditions significantly affect run-scoring outcomes. The settlement window extends to 7 June, allowing for postponement resolution should weather intervene. Current pricing suggests either a liquidity problem or data feed issue rather than analytical consensus that the Tigers possess an impossible path to victory.

Methodology

We track Detroit Tigers vs. Chicago White Sox 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

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 Best Prediction Markets, 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.