Colorado Rockies vs. Chicago Cubs

Platform comparison

Active sub-markets

Market context

The Colorado Rockies will host the Chicago Cubs on 15 June at 8:05 PM ET in a regular-season Major League Baseball fixture. The market implies a 26% probability that Colorado wins, reflecting the Cubs' historical edge in head-to-head matchups and their stronger 2026 performance trajectory. Settlement occurs on 23 June, allowing a week for postponements or make-up games should weather or scheduling conflicts arise. Under MLB's official rulebook, tied games are exceedingly rare in the modern era; cancellations without rescheduling would trigger a 50–50 resolution, though this outcome remains unlikely given the league's fixture flexibility.

Historical context shows the Cubs have won approximately 54% of meetings against Colorado since 2015, a modest but consistent advantage that underpins the current market pricing. Recent seasons have seen the Cubs maintain stronger playoff positioning and roster depth, factors that typically correlate with regular-season performance. The Rockies' home-field advantage at Coors Field—where altitude effects inflate offensive output—partially offsets this gap, yet has not historically shifted aggregate win rates sufficiently to price them as favourites in neutral-probability assessments.

From a regulatory standpoint, this market's accessibility varies by jurisdiction. Under German GlüStV provisions, sports prediction markets require state licensing; UK-based traders face no KYC requirement up to £1,500 notional exposure, though operators must hold appropriate gambling licences. US CFTC oversight applies to derivatives-settled contracts; prediction markets structured as binary options may fall outside commodity futures regulation if properly domiciled. Traders should verify their own regulatory status before participation, as tax reporting obligations differ materially across territories.

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 Polymarket Tax UK, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Tax 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.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK 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.