Cleveland Guardians vs. Detroit Tigers

Platform comparison

Market context

The Cleveland Guardians face the Detroit Tigers on 13 August at 1:10 PM ET in a regular-season matchup within the American League Central division. The 53% implied probability for a Guardians victory at settlement reflects moderate confidence in Cleveland, though this sits notably lower than typical sportsbook opening lines for the matchup, which favour the Guardians by approximately 1.5 to 2 runs. This divergence suggests prediction-market participants are pricing in either greater uncertainty than traditional oddsmakers or factoring tail risks around late-breaking roster changes and weather conditions that sportsbooks may have already incorporated.

Historical context matters here: the Guardians have consistently outperformed the Tigers in head-to-head matchups over the past three seasons, winning roughly 60% of divisional contests. However, August baseball introduces variables that compress historical edges. Both teams' bullpen depth frequently shifts through mid-season trades, and late-summer fatigue patterns differ markedly between contenders and rebuilding clubs. The Tigers, despite their lower win total, have shown volatility in single-game outcomes against Cleveland, particularly in day games where Detroit's younger roster sometimes capitalises on fatigue advantages.

Traders should monitor roster announcements through 12 August, particularly any injury updates to starting pitchers or key relievers. Detroit's recent acquisition activity and Cleveland's trade-deadline positioning will shape bullpen availability. Weather forecasts for Cleveland on game day—particularly wind direction and temperature—carry outsized importance for this ballpark. Current sportsbook consensus sits approximately 2–3 percentage points higher on Guardians probability than the prediction-market reading, suggesting modest value asymmetry depending on one's assessment of late-breaking information flow.

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.