Cleveland Guardians vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

Cleveland and Detroit are due to meet in MLB at 1:10pm ET on 21 May, with the market currently pricing a Guardians win at 16% and the Tigers as the clear favourite. That sort of low implied chance usually reflects a combination of team form, probable pitching, and where the game sits in the schedule rather than any single result. In a rivalry that has swung both ways in recent years — the Guardians took the 2024 AL Division Series and the Tigers responded in the 2025 AL Wild Card Series — small pre-match prices have often been sensitive to late line-up changes and bullpen availability.

For traders, the main catalysts are the official starting line-ups, any pitching update before first pitch, and whether the game keeps to the announced midday slot. The current settlement window runs to 28 May, which matters because a postponement would extend open exposure rather than close the market. In payment-driven markets, depth can also move when funding friction changes: easier deposits via Klarna, SEPA or USDC tend to pull in more smaller tickets, while slower bank rails and withdrawal timing can thin the book and widen spreads. Recent listings and previews have pointed to a Detroit home game with Tigers moneyline support and an over/under around eight runs, which is consistent with the market’s low Guardians price.

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Methodology

This page reviews Cleveland Guardians vs. Detroit Tigers 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.