Houston Astros vs. Kansas City Royals

Platform comparison

Active sub-markets

Market context

The Houston Astros face the Kansas City Royals on 14 June at 2:10 PM ET in a regular-season Major League Baseball matchup. The settlement window extends to 21 June at 18:10 UTC, allowing for postponements or rescheduling within that seven-day window. Current crowd-implied probability sits at 0% YES, indicating the market has not yet attracted meaningful liquidity or positioning ahead of the fixture.

Historical precedent for MLB regular-season games between these franchises shows the Astros have maintained a competitive edge in recent seasons, though single-game outcomes remain inherently volatile. The 0% reading reflects either minimal trading activity or a technical artefact of early market formation rather than genuine consensus that the Royals cannot win. Comparable markets on btc-prediction.bet typically see probability shifts of 10–25 percentage points once trading volume accumulates in the 48 hours before game time, particularly if injury reports or weather forecasts emerge.

Key catalysts include official lineups released 24 hours before first pitch, weather conditions at Kauffman Stadium in Kansas City, and any late roster moves. Recent MLB injury announcements have affected both teams' depth charts; traders should monitor ESPN and MLB.com for updates on starting pitchers and key position players. Settlement in USDC on the platform means traders can exit positions without waiting for final resolution, though liquidity depth will determine execution quality. The seven-day settlement window provides buffer against single-day postponements, reducing tail risk for position holders.

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Where can I trade this market with the lowest fees?

On BTC 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.

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 BTC Prediction?

Zero. BTC 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 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.