Boston Red Sox vs. Colorado Rockies

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Market context

The Boston Red Sox face the Colorado Rockies in a Major League Baseball clash at Coors Field on 22 June 2026, with the game set for 8:40pm ET. Polymarket prices the contract today at 0% for a Red Sox win, reflecting a near-total market consensus that the Rockies will prevail in this matchup. This on-chain conditional token, settled in USDC on the Polygon network, treats the outcome as binary, locking in the current probability until the settlement window closes on 30 June 2026.

Historically, games at Coors Field in Denver have produced heavy home-team advantages due to the thin air, which carries baseballs further and inflates scoring. Comparable cases from the 2024 and 2025 seasons show Rockies home wins occurring at rates exceeding 65%, often with combined scores surpassing the 11.5-run line seen in this fixture[1]. The current 0% price for the Red Sox aligns with this pattern, suggesting traders view the altitude and Rockies’ recent home form as decisive factors that outweigh Boston’s offensive capabilities.

Traders should monitor any late-injury announcements for key Rockies hitters or Red Sox starters, as roster changes could shift the probability significantly. The schedule dependency is critical: if the game is postponed, the market remains open until completion, but a cancellation without a make-up game would resolve 50-50. Recent coverage from ESPN confirms live tracking of both teams’ lineups and in-game stats, which will serve as the primary resolution source[3]. Any weather delays or pitching adjustments announced before the 8:40pm ET start will be the immediate catalysts for price movement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 Kalshi 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.

Is this market available outside the US?

Kalshi UK 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 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.