Cleveland Guardians vs. Houston Astros

Platform comparison

Active sub-markets

Market context

The Cleveland Guardians are priced as the **underdog** here, with the crowd-implied probability at **39% YES**, while the Astros sit as the market favourite. Mainstream sportsbooks are broadly aligned with Houston, with moneyline prices around Astros -140 to -145 and Guardians +119 to +120, which implies the consensus is closer to the low-to-mid 50s for Houston before vig.[1][3] For a handicapper, that makes Cleveland the obvious contrarian angle: the market is asking you to pay up for Houston’s home edge and stronger offensive reputation, so the value case for the Guardians rests on whether the line has over-corrected.

Comparable market signals also lean Houston. FanDuel’s model price has the Astros as a 53.6% winner, and ESPN’s game page shows Houston around the high-50s on its win probability readout, both comfortably above the prediction market’s 39% YES level for Cleveland.[3][4] That gap suggests the crowd is either discounting the Guardians too heavily or simply following the favourite. In practical terms, the current price leaves more room for a Houston side than a Cleveland one unless the game environment shifts materially.

Traders should watch for the starting pitchers, late lineup changes, and any weather or postponement risk, because this market stays open if the game is delayed and only settles 50-50 if it is cancelled or ends in a tie. The posted total of 8.5 runs also matters: if pre-game reports point to a lower-scoring setup, that can strengthen an underdog view on Cleveland by increasing variance, while a confirmed stronger Houston batting order would reinforce the favourite case.[1][3]

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 Who Will Win, 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?

On Who Will Win, 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.

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 Who Will Win?

Zero. Who Will Win 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, Who Will Win 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.