Colorado Rockies vs. Los Angeles Dodgers

Platform comparison

Active sub-markets

Market context

The Colorado Rockies travel to face the Los Angeles Dodgers on 27 May at 10:10 PM ET in a regular-season National League West matchup. The 22% implied probability for a Rockies victory reflects the substantial gap in recent form and roster construction between the two franchises. Across major prediction platforms, this probability translates to roughly 3.5 decimal odds on Kalshi's binary format, whilst Polymarket's fractional representation and Betfair's traditional decimal pricing would render the same event at marginally different fee structures—Kalshi typically charging 2% on both sides versus Polymarket's variable maker-taker model. For traders evaluating cross-platform arbitrage, the settlement window extending to 4 June 2026 provides a buffer for postponements, though cancellations without rescheduling would trigger a 50-50 split rather than outright Rockies loss.

Historical context shows the Dodgers have won roughly 60% of head-to-head matchups against Colorado over the past three seasons, with the gap widening when games occur in Los Angeles. The Rockies' home-field disadvantage at altitude has paradoxically not translated to consistent wins, and their 2025 roster lacks the offensive depth to reliably compete against Dodgers starting pitching. Traders should monitor roster announcements 48 hours before first pitch—particularly injury status for either team's primary starter—as these typically shift implied probabilities by 3–5 percentage points on Smarkets and other liquid books.

Methodology

This page compares Colorado Rockies vs. Los Angeles Dodgers 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 Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative UK, 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.

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.