San Francisco Giants vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

Polymarket is pricing **San Francisco Giants vs. Miami Marlins** at **0% YES** today, which means the contract is effectively shut out on the Giants outcome and all of the value sits on the Marlins side or the 50-50 rule if the game does not complete. On Polymarket, that exposure is held through USDC on Polygon and settled via conditional tokens, so the relevant question for users is not the abstract matchup but whether the listed game is actually completed and officially graded.

That 0% reading looks extreme against the conventional baseball market. Recent pre-game odds had San Francisco favoured around **-144** on the moneyline, with Miami about **+122**, while ESPN’s team stat page shows the Giants with a slightly better batting average and slugging line, and the Marlins with a higher on-base percentage.[1][3] In other words, the exchange price is not mirroring the sportsbook view; it is behaving more like a near-certain no-bid on the Giants side, which can happen when traders see a settlement issue, a stale contract, or a market that has effectively been priced around an outcome other than the on-field matchup itself.[1][3]

The main catalysts are straightforward: line-up confirmation, any postponement or suspension risk, and whether the game is completed under MLB’s official final statistics rather than abandoned. The market description says a postponement keeps it open until completion, while a cancellation with no make-up, or a tie, resolves 50-50, so traders should watch the league’s scheduling and final status updates rather than in-game score alone. A recent preview also had the total at **8** with an under lean, which hints at a lower-scoring profile but does not affect settlement unless the game is delayed or altered.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track San Francisco Giants vs. Miami Marlins 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 Legit?, 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.

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 Polymarket Legit??

Zero. Polymarket Legit? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? 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.