San Francisco Giants vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

Polymarket is pricing the June 19 Giants–Marlins game at **0% YES** on the Giants side, so the contract is effectively treating a Giants win as impossible and a Marlins win as the live path. On Polymarket, that view is expressed through USDC-settled conditional tokens on Polygon, with the position resolving from the official final MLB result rather than the in-game noise.

The broader read on that number is that it sits well below the market context from conventional sportsbooks, which had the Giants as only slight outsiders and the Marlins as a narrow favourite in pre-game pricing. Action Network listed San Francisco around -106 and Miami around -113, with Fox Sports showing a similar near pick’em structure, which makes a 0% implied probability on Polymarket look like a misprice, stale order book, or a contract already reacting to later information rather than the opening line.[1][4] For comparison, when a baseball market is this far from sportsbook consensus, traders usually watch whether the exchange price is simply thin or whether there has been an event-specific update driving the move.

The main catalysts are straightforward: line-ups, any late pitching change, and the game’s actual completion status. The market description says postponed games remain open until completed, while a cancellation with no make-up or a tie resolves 50-50, so any schedule change matters more than it would in a standard moneyline bet. ESPN and The Athletic both carried the game as an active June 19 contest at 7:10pm ET, which suggests the primary next check is the official MLB final and whether the scheduled start and line-ups were maintained.[5][8]

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Polymarket Scam? 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.

Do I need to KYC for this market?

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