Miami Marlins vs. Philadelphia Phillies

Platform comparison

Active sub-markets

Market context

The Miami Marlins travel to Citizens Bank Park on 17 June for a single game against the Philadelphia Phillies, with first pitch at 1:05 PM ET. This market settles based on the official final result recorded by Major League Baseball, with a settlement window extending to 24 June to accommodate any postponements. A 50-50 split applies only if the fixture is cancelled without a rescheduled date or concludes in a tie—an exceptionally rare outcome in MLB.

The 100% implied probability for this market reflects either a technical anomaly in crowd pricing or an extreme consensus view that warrants scrutiny. Historically, single-game MLB markets between non-pennant-race teams rarely sustain such certainty unless one roster is substantially depleted by injury or suspension. The Phillies maintain stronger recent form and deeper pitching depth than Miami, yet the Marlins remain competitive within divisional play. Traders automating conditional orders should flag any roster updates or weather alerts that might trigger postponement logic, as the settlement window's seven-day buffer creates arbitrage opportunities if the game shifts to a later date.

Monitor official MLB injury reports and starting pitcher confirmations through 16 June. Recent weather patterns for Philadelphia in mid-June typically favour completion, though June thunderstorms occasionally force delays. Programmatic traders should integrate MLB's official schedule API to detect any status changes; a postponement would keep this market open but potentially alter betting dynamics if rescheduled during a different weather window or against a different opponent.

Methodology

We track Miami Marlins vs. Philadelphia Phillies 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

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 Bot 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.

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 Bot UK?

Zero. Polymarket Bot 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.

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.