Miami Marlins vs. Philadelphia Phillies

Platform comparison

Active sub-markets

Market context

The Miami Marlins will host the Philadelphia Phillies on 17 June at 1:05 PM Eastern Time in a regular-season Major League Baseball fixture. The settlement window closes on 24 June at 17:05 UTC, allowing a week for completion should postponement occur. Under MLB rules, if the game is cancelled without a rescheduled make-up date, or concludes in a tie—an outcome that has not occurred in MLB since 2002—the market resolves 50-50 rather than to either team.

Historical precedent suggests that 100% crowd-implied probability on a regular-season MLB game reflects either extreme confidence in one outcome or sparse liquidity. The Phillies have finished above .500 in five consecutive seasons and currently maintain a stronger win-loss record than Miami; however, single-game markets in baseball are notoriously volatile, with home-field advantage and weather conditions often overriding seasonal trends. Recent comparable markets on MLB fixtures show that crowd probability at this extreme typically shifts materially once trading volume increases.

Traders should monitor the official MLB injury reports and weather forecasts for Miami in the days preceding the match. Pitching assignments, typically announced 24 to 48 hours before game time, materially affect outcome probabilities. From a regulatory standpoint, this market's accessibility depends on jurisdiction: under German GlüStV provisions, sports prediction markets require specific licensing; US CFTC oversight applies to derivative contracts on sports outcomes; and platforms offering no-KYC access up to $1,500 USD per user typically restrict such markets to non-US residents or require identity verification above that threshold, limiting participation for smaller traders in certain regions.

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

Is this market available outside the US?

Polymarket Legal 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'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.

Do I need to KYC for this market?

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