Colorado Rockies vs. Arizona Diamondbacks

Platform comparison

Active sub-markets

Market context

The Colorado Rockies travel to Arizona to face the Diamondbacks on 24 May at 4:10 PM ET, with the market currently pricing the Rockies at zero per cent implied probability. This represents an extreme consensus view favouring Arizona, though the settlement window extends to 31 May to accommodate any postponements. The 0% reading suggests either a sharp consensus on Diamondbacks superiority or insufficient liquidity to establish a meaningful line.

Historical context matters here: regular-season matchups between mid-table NL West teams rarely sustain extreme probability readings once trading volume increases. The Rockies, despite playing in a challenging division, have shown capacity to compete in single games regardless of season trajectory. Arizona's recent form and home-field advantage explain the consensus tilt, but a 0% valuation leaves no room for variance—injuries, bullpen fatigue, or weather effects that routinely swing single games. Comparable situations in prediction markets often see contrarian value emerge once initial positioning clarifies.

Traders should monitor roster updates through to game time, particularly regarding starting pitcher assignments and any late-inning availability questions for either bullpen. Colorado's recent performance against left-handed starters and Arizona's home record in May provide concrete reference points. Weather at Chase Field—typically favourable for hitters—could influence run expectations. The extended settlement window suggests the market operator anticipated potential scheduling complications, which itself indicates uncertainty worth pricing into any position.

Methodology

This page reviews Colorado Rockies vs. Arizona Diamondbacks across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 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.