Cleveland Guardians vs. Chicago White Sox

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Active sub-markets

Market context

The underlying event is the MLB game between the Cleveland Guardians and Chicago White Sox, scheduled for 7:40PM ET on 23 June, where the market resolves to the winner. With a current crowd-implied probability of 38% favouring the Guardians, the price suggests a lean towards the White Sox, a stance that aligns with their recent head-to-head dominance. Historically, the White Sox have won 131 games against the Guardians’ 167, yet their run production per game (3.9) trails the Guardians’ 4.5, creating a nuanced backdrop for this 38% figure[4]. In comparable late-season matchups, such as the 6-5 walk-off White Sox victory in a previous encounter, the underdog has frequently capitalised on tight margins, framing this probability as a reflection of volatility rather than pure team strength[2].

A power-user approaching this programmatically would monitor starting pitcher announcements and bullpen dependency schedules, as these are the primary catalysts for price shifts. Recent coverage highlights the White Sox’s offensive resilience, noting their ability to secure narrow wins even when run totals are low, which could invalidate the current 38% guard if the starting rotation is weakened[2]. Traders should watch for any late-injury news on key Guardians hitters, as the Guardians’ higher points-per-game average makes them vulnerable to lineup disruptions[4]. Conditional orders should be set to trigger on confirmed starting lineups, ensuring execution aligns with the most current roster data before the settlement window closes on 30 June 2026[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Cleveland Guardians vs. Chicago White Sox on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Review 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?

Polymarket Review 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review UK triggers a quick verification flow that finishes in minutes.