Cleveland Guardians vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

The Cleveland Guardians and Detroit Tigers met on 20 May in a regular-season MLB game, and the settlement outcome turns entirely on the official final score. Recent form has been mixed but informative: Cleveland beat Detroit 4-3 on 19 May, while a May 18 highlight package shows the Guardians also winning 8-2, giving Cleveland a short-term edge in the matchup. That is the sort of recent head-to-head sequence traders typically use to calibrate whether a near-100% implied price is reflecting certainty about one side, or simply market wiring around the event already being over and the settlement pending on the official box score.

For context, this market sits in the usual prediction-market regulatory split: in Germany, access can be affected by the GlüStV framework, which treats remote betting and games of chance as tightly regulated; in the US, the CFTC’s reach matters where event-contract activity may be viewed through derivatives rules rather than ordinary sportsbook regulation. Where a venue advertises “no-KYC up to $1,500”, that generally means small deposits or trading limits may be usable without full identity verification, which can make access easier for a straightforward sports outcome market like this, though higher activity or withdrawals can still trigger checks depending on the platform’s thresholds.

What matters next is whether the game has already been officially recorded as complete, whether there was any postponement or suspended-play wrinkle, and whether a make-up fixture was required. Because the market allows a 50-50 outcome only if the game is cancelled outright or ends tied, traders should watch the official MLB game status and final statistics source rather than social media or highlights. ESPN and MLB score pages both show the teams’ recent results, and those will usually be updated before any broader news coverage becomes relevant.

Sources: 1 · 2 · 3 · 4 · 5

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

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?

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.

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 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.