San Francisco Giants vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The San Francisco Giants are visiting the Miami Marlins at loanDepot Park, with the game listed for a 7:10 pm ET first pitch and Miami priced as a slight sportsbook favourite in the available pre-game line. ESPN’s odds feed showed the Marlins at around **-120** and the Giants at **+100**, which implies a Miami win probability in the low-50s before vig, so the market’s **0% YES** is a clear outlier versus both bookmaker pricing and the underlying baseball baseline.[1][2]

That gap is easier to read by comparing it with recent form and matchup context than with the binary contract alone. Miami entered at **37-38** and has been stronger at home (**23-16**), while San Francisco was **31-43** and **17-23** on the road; ESPN also listed Miami’s probable starter on the board at **-120** and San Francisco’s Landen Roupp as the opposing starter, which supports a modest Marlins edge rather than a no-chance Giants view.[1] MLB’s preview noted Bryce Eldridge’s 22-game on-base streak and Otto Lopez hitting **.349** with an **.893 OPS**, useful as situational indicators but not enough to justify a zero-implied outcome.[3]

For traders, the main catalysts are line-up confirmation, any late pitching change, and whether the game is completed as scheduled. The series is set for three games in Miami, with Friday’s opener followed by Saturday and Sunday start times already published, so postponement risk is mostly about weather and operational delay rather than fixture uncertainty.[5] If the game is delayed, the contract stays open until completion; if it is cancelled or tied, it resolves **50-50**, which matters more here than usual because a 0% YES price leaves little room for non-game outcomes.[2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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 Best Prediction Markets 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?

Best Prediction Markets 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.

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.