Arizona Diamondbacks vs. Colorado Rockies

Platform comparison

Active sub-markets

Market context

Polymarket has this Arizona Diamondbacks vs Colorado Rockies contract at 24% YES, so the market is currently pricing Colorado as the likelier side on the Polygon-based, USDC-settled conditional token. For a user holding the YES side, the payoff still hinges on the official final MLB result rather than scoreline swings or in-game volatility. The game is scheduled for 16 May at Coors Field, where run environment is typically high and late score changes are common, which can keep the market lively until the final out.

The main historical frame is the teams’ recent head-to-head and the broader Coors Field context. Recent search results show the clubs meeting in August 2025 and again in spring training and spring breakout settings, with Arizona coming out ahead in at least one highlight game and Colorado also producing strong offensive results in exhibition play. That mix matters because Rockies games at home can be less straightforward than a simple strength ranking suggests: the park inflates offence, and lead changes are more frequent than at lower-scoring venues. On Polymarket, that means the contract can move sharply on pre-game lineup news or a late pitching change even when the opening probability looks low.

Traders should watch the official starting pitchers, any rest-related scratches, and confirmed line-ups close to first pitch, because those are the main near-term catalysts for repricing. MLB’s game page and final stats will be the source used for settlement, with postponement extending the contract until completion and a cancelled game or tie resolving 50-50. If there is any weather delay or schedule change, that can matter for both timing and the eventual outcome, but absent cancellation the token settles strictly on the completed result.

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Methodology

We track Arizona Diamondbacks vs. Colorado Rockies on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 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.

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.