Boston Red Sox vs. Colorado Rockies

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Active sub-markets

Market context

The Boston Red Sox face the Colorado Rockies at Coors Field on 22 June for an 8:40pm ET MLB contest, with the market heavily favouring a Red Sox victory. Historical precedent strongly supports this 80% YES probability: last season, Boston swept a three-game set against Colorado, outscoring them 29–7[4]. This dominance mirrors comparable mid-season clashes where a team with a superior batting average and recent offensive form overwhelms a franchise finishing last in four consecutive seasons and losing over 100 games in the past three years[2]. The Rockies’ status as the worst record in MLB, sitting 18 games below .500, frames the current line as a rational reflection of entrenched disparity rather than a fleeting anomaly[2].

Traders must monitor the starting pitching matchups and immediate injury updates, as these are the primary catalysts that could shift the line. Left-hander Jake Bennett (1–3, 4.79 ERA) starts for the Red Sox, while right-hander Ryan Feltner (2–2, 5.05 ERA) takes the mound for the Rockies, with Feltner posting a 3.86 ERA in four starts since returning from the injured list on 30 May[2]. The Red Sox have homered in nine of their last 10 games, hitting 15 home runs in that span, a trend that significantly boosts their win probability against a Rockies defence that has struggled consistently[2]. Watch for any pre-game announcements regarding Bennett’s form or Feltner’s stamina, as Bennett is facing the Red Sox for the first time and Feltner is making his first start against them in his six-year career[2].

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

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 Champions League Prediction, 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?

Champions League Prediction 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.

What does it cost to trade on Champions League Prediction?

Zero. Champions League Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.