Arizona Diamondbacks vs. Cleveland Guardians

Platform comparison

Market context

The Arizona Diamondbacks and Cleveland Guardians meet in Cleveland, and the market’s **18% YES** price is materially below the sportsbook consensus, which mostly has Cleveland favoured in the **-141 to -175** range, implying roughly a **58% to 64%** win chance before vig is removed.[1][2][6][9][17] That gap suggests the contract is pricing a much lower Diamondbacks win probability than the broader betting market, where several books and pick services lean to Cleveland on the moneyline.[1][2][6][9]

For comparison, recent modelling and pick content has not framed Arizona as a strong live side: SI listed Cleveland at **-141** and called the Guardians, while other market pages showed similar Cleveland support around **-160 to -163**.[1][6][9][10] VegasInsider’s consensus screen also pointed to Cleveland around **-162**, which is well above the crowd-implied **18%** on Arizona in this contract and leaves the prediction market more sceptical of a D-backs upset than the average sportsbook price board would suggest.[17]

The main catalysts are the confirmed starting pitchers, any late lineup scratches, and whether the game is played as scheduled or pushed by weather, because postponement keeps the market open until completion and a cancellation or tie resolves 50-50.[1][9][14] ESPN’s odds page showed starter context for the matchup, and that matters because late pitching changes can move a baseball moneyline quickly, especially in a game where the market is already far from the books.[9]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.