Colorado Rockies vs. Arizona Diamondbacks

Platform comparison

Active sub-markets

Market context

The Colorado Rockies and Arizona Diamondbacks meet in Denver with the market leaning against the home side at 34% implied for a Rockies win. Recent comparable spots point to Arizona being priced as the more reliable team: Lines.com noted the Diamondbacks were around a 71% moneyline favourite ahead of the series, while OddsIndex put Arizona’s win chance in the low 60s and highlighted a bullpen edge, with Arizona at a 3.49 ERA against Colorado’s 4.72. That gap matters at Coors Field, where late scoring often decides whether a modest favourite converts, and the current price is broadly consistent with Arizona being the stronger side even before any game-day lineup news.

The main trader watchpoints are the starting pitchers and any last-minute rest decisions in a short turnaround series. OddsIndex identified Colorado’s Michael Lorenzen as carrying a 6.55 ERA over 44 innings, though he did shut out Arizona over seven innings in July 2025, so the head-to-head record is not one-way. Arizona’s offence has been driven by Corbin Carroll, who is listed at .272/.384/.503 with five homers, while Colorado’s run production has been thinner and reliant on hitting parks rather than suppressing pitching mistakes. Any late scratch, bullpen availability issue, or weather-related adjustment in Denver would have outsized impact because the price already assumes Arizona’s pitching and depth edge.

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Methodology

This page is a comparison snapshot: one live quote (Polymarket), 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

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.

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 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.