Colorado Rockies vs. Arizona Diamondbacks

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Active sub-markets

Market context

The Colorado Rockies and Arizona Diamondbacks meet in Phoenix on Thursday night, with the market resolving to whichever side wins the official final result. The current 34% YES price implies the Rockies are the clear underdog against a division opponent that has already beaten them repeatedly in recent head-to-head meetings; Arizona won 2-1 on Thursday night on Corbin Carroll’s ninth-inning RBI single, extending its streak to five games. Over longer samples, the matchup has also leaned Arizona’s way: StatMuse’s head-to-head summary shows the Diamondbacks with a positive overall edge, and recent season results include a 14-8 Arizona win in June 2025. That sort of record is the main context for reading a sub-50% Rockies price: it reflects both team quality and the market’s expectation that Colorado must outperform form and venue to cash.

For traders, the main catalysts are the usual game-day dependencies: starting pitcher confirmation, late lineup changes, bullpen availability, and any weather or postponement risk. Official team and MLB announcements matter most because this market stays open if the game is delayed and only settles once the game is completed; if there is no make-up after a cancellation, or the game ends in a tie, it resolves 50-50. On access, the regulatory frame is relevant: under Germany’s GlüStV regime, prediction-market participation can be treated differently from standard sports betting depending on structure and geoblocking, while US CFTC reach can matter where a contract is viewed as a derivatives-style event market rather than a simple wager. “No-KYC up to $1,500” means a user may be able to trade this market without full identity verification until cumulative activity passes that threshold, which lowers the friction to enter but does not remove local legal or tax obligations.

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Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

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 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.

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.