Colorado Rockies vs. Arizona Diamondbacks

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Market context

The Colorado Rockies face the Arizona Diamondbacks on 24 May at 4:10PM ET in a regular-season MLB matchup. The current 0% YES probability reflects either minimal liquidity in the order book or a technical settlement state awaiting market activation. With resolution tied to official MLB final statistics and a settlement window extending to 31 May at 20:10 UTC, traders have a narrow window to position before the game concludes.

Historical precedent suggests that pre-game baseball markets typically see material probability shifts once lineups and weather conditions are confirmed within 24 hours of first pitch. The Diamondbacks enter 2026 as a stronger franchise than the Rockies based recent competitive records, though Coors Field's elevation advantage for Colorado's hitters remains a persistent factor in head-to-head matchups. Comparable single-game markets on btc-prediction.bet have shown that early-stage zero probabilities often reflect incomplete order-book depth rather than genuine market consensus.

Key catalysts include starting pitcher announcements—expected 48 hours before game time—and any late roster changes or injury updates from either club. Weather at Coors Field, particularly wind direction and temperature, materially affects run-scoring expectations. Traders should monitor MLB.com and team official channels for lineup confirmation. The USDC settlement mechanism means resolution depends entirely on the official box score; any postponement keeps the market open until completion, whilst cancellation without a make-up game triggers a 50-50 split.

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

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.

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.

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.