Cleveland Guardians vs. Houston Astros

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Active sub-markets

Market context

The Cleveland Guardians and Houston Astros are scheduled for a single MLB game, and the market resolves on the straight moneyline: Cleveland if the Guardians win, Houston if the Astros win, with postponed games remaining open until completion and a cancelled or tied game paying 50-50. ESPN lists Cleveland at 41-36 and first in the AL Central, while Houston is 36-42 and fourth in the AL; that gap helps explain why the current crowd-implied **6% YES** for Cleveland is a longshot price rather than a neutral coin flip.[6]

Historically, the matchup has tilted to Houston across recent samples. StatMuse says the Astros are 2-1 against Cleveland this season,[8] and TeamRankings records Houston ahead 10-5 over the last three seasons’ meetings.[2] For a trader using conditional orders or bot logic, the key point is that a low YES probability here is not just about the season standings: it is also a shorthand for head-to-head context, home-field effects, and how quickly the market can reprice after confirmed line-ups or a pitching change.[2][8]

The main catalysts are the final pre-game roster and starting-pitcher confirmations, plus any weather or scheduling disruption that could shift the settlement path. ESPN’s game page shows the fixture as a 2:10 pm ET start on 21 June, so programmatic watchers should monitor official MLB status, line-up releases and any delay notice before the first pitch, because postponement keeps the market live until the make-up game is played.[6] If the game is played as scheduled, the market is simply a binary read on the final score; if it is cancelled outright or ends level, it resolves 50-50 under the rules.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Bot UK, which mirrors the Polymarket order book directly.

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 Polymarket Bot 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.

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 Polymarket Bot UK?

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

Do I need to KYC for this market?

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