Houston Astros vs. Kansas City Royals

Platform comparison

Active sub-markets

Market context

The Houston Astros face the Kansas City Royals on 13 June at 7:10PM ET in a regular-season MLB matchup. The settlement window extends to 20 June, allowing for postponements or rescheduled games within that seven-day window. Resolution depends on official MLB statistics; cancellations without make-up games or ties trigger a 50-50 split.

A 100% crowd-implied probability on either side in sports markets typically reflects either overwhelming historical dominance, recent form, or missing information from the crowd. The Astros have consistently outperformed the Royals in recent seasons, though single-game outcomes remain inherently volatile. Reviewing comparable June matchups between these franchises shows that crowd confidence at this extreme level often precedes modest movement once lineups and weather data crystallise closer to game time. Traders using conditional order logic should note that such probabilities rarely hold at settlement unless the underlying fundamentals—roster availability, injury status, pitching matchups—remain static.

Key catalysts include official roster announcements and pitching assignments, typically confirmed 24–48 hours before first pitch. Weather conditions at Kauffman Stadium in Kansas City can affect game scheduling; June thunderstorms occasionally trigger postponements in the region. Automated monitoring systems tracking injury reports from both organisations' official channels and MLB transaction feeds will flag material changes. The extended settlement window provides flexibility for rescheduled games, but traders should programme alerts for any cancellation notices, which would immediately trigger the 50-50 resolution clause.

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 Polymarket App 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 App 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 does it cost to trade on Polymarket App UK?

Zero. Polymarket App 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 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.