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 in a regular-season National League West matchup. The settlement window extends to 31 May at 20:10 UTC, allowing for postponements or rescheduling within that seven-day buffer. The 0% implied probability currently displayed reflects either minimal trading activity or a technical display lag common across smaller-cap sports markets on decentralised platforms.

Historical context matters here: Rockies-Diamondbacks games in May typically see modest trading volumes on prediction markets, with outcomes heavily influenced by recent form and injury status rather than seasonal records. The Diamondbacks finished 2023 as NL West contenders, whilst the Rockies have historically underperformed at altitude-adjusted expectations. Comparable May matchups between these clubs on Polymarket and Kalshi show divergent liquidity patterns—Kalshi's regulated US-only access concentrates American bettors, whilst Polymarket's international reach fragments the order book across decimal odds and implied probability formats, creating occasional mispricing windows.

Traders should monitor lineup announcements through 24 May, particularly regarding Colorado's starting pitcher and Arizona's injury reports. Recent Diamondbacks performance metrics and bullpen availability will influence late-market movement. The game's 4:10 PM ET start time sits outside typical European trading hours, which may explain the current probability display anomaly. Fee structures diverge meaningfully: Polymarket charges 2% on both sides, whilst Kalshi's binary structure and lower fees (typically 0.5–1%) may attract sharper action once volume materialises closer to game time.

Methodology

This page compares Colorado Rockies vs. Arizona Diamondbacks specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

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.