Cleveland Guardians vs. Houston Astros

Platform comparison

Active sub-markets

Market context

The Cleveland Guardians and Houston Astros are due to meet in a single MLB game with a live settlement path that depends on the result, or on whether the fixture is completed at all. On comparable Guardians-Astros matchups this season, sportsbook prices have typically made Houston a modest favourite, with one April market listing the Astros at -157 on the moneyline and another showing Cleveland at -152 for a different game in Cleveland, while model-based previews have been closer to a coin flip, including a 50.4% Guardians projection from numberFire via FanDuel and a 57% Astros win probability from FOX Sports for a separate meeting.[2][3][4]

That historical spread matters because a 0% YES price in a prediction market is far outside the kind of uncertainty seen in previous odds sets, and it points to either a stale contract, a data issue, or an event already effectively priced as impossible by participants rather than by bookmakers. Across recent comparable contests, the market has usually traded around the mid-40s to low-60s in implied win probability, not near zero, which is a meaningful divergence from both sportsbook lines and analyst consensus.[2][3][4]

For traders, the key catalysts are whether the game has already been completed, whether there is a postponement or makeup schedule, and whether any late official change affects grading before the settlement window closes. Recent preview markets also show the usual baseball dependencies that can move price quickly, including starting pitcher confirmation, line-up news, and weather-related delays; FOX Sports’ July preview and Action Network’s April odds board both show how sharply Guardians-Astros prices can shift from one meeting to the next as the venue, total, and moneyline change.[2][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Cleveland Guardians vs. Houston Astros 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 Best Prediction Markets UK — 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 Best Prediction Markets UK, 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?

Best Prediction Markets UK 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.

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.