Cleveland Guardians vs. Detroit Tigers

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Market context

The Guardians and Tigers are due to meet in Detroit on Thursday afternoon, with Cleveland arriving after back-to-back wins in the series. Cleveland won 8-2 on Monday, driven by José Ramírez’s three-hit, four-RBI night, before taking the next game 4-3, which suggests the market’s 16% view on a Tigers win is pricing in a stronger Guardians side than the standings gap alone would imply.

Recent head-to-head results matter here because this has not been a one-way matchup. Detroit had been competitive earlier in the season, but Cleveland’s latest surge has shifted the short-term read. In comparable divisional spots, the side with the current pitching edge and the more reliable late-game bullpen has tended to outperform the crowd if the opponent is coming off consecutive losses, especially when the underdog’s recent form has dipped at home.

The main catalysts to watch are the starting-pitcher announcement, any late scratch from the Cleveland line-up, and whether Detroit can get enough length from its starter to avoid leaning on a taxed relief group. ESPN’s game listing for Monday showed Cleveland at 27-22 and Detroit at 20-26, while MLB’s standings page confirms the Tigers remain well behind in the division. If either club confirms a surprise rest day or injury-related absence before first pitch, that would be the clearest near-term driver of price movement.

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Methodology

We track Cleveland Guardians vs. Detroit Tigers 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 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.

Is this market available outside the US?

PolyGram 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.

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.

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.