San Francisco Giants vs. Arizona Diamondbacks

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Market context

The San Francisco Giants are due to host the Arizona Diamondbacks in the second game of a four-game series. Arizona won the opener 12-2 on 18 May, and the clubs have been closely matched over a longer sample: StatMuse lists the Diamondbacks at 10-10 in the last 20 meetings. The current market price of 45% for a Giants win points to a near coin-flip, which is consistent with a division matchup where short series swings often matter more than season-long records.

The immediate form lines are split. ESPN notes Ketel Marte’s ninth-inning three-run homer helped Arizona win 5-3 in a separate recent game, while MLB’s preview highlights Brandon Pfaadt’s poor numbers against San Francisco, at 0-4 with a 5.11 ERA in five starts. On the Giants’ side, Justin Verlander has been sharper this month, with a 0.69 ERA across two May starts. That pitching contrast is the clearest on-field variable, and it matters because one or two innings can decide a spot like this before the series state shifts again.

For crypto-market readers, the main practical point is that this contract settles in USDC only after the official final result, so postponement risk is not just theoretical; if weather or scheduling delay pushes the game back, the market stays open until completion. There is no direct on-chain driver here, but broader BTC/ETH risk sentiment can still affect how traders size positions in a 45% spot. If you are watching live alongside exchange data, late movement in funding rates or a sudden BTC sell-off may change appetite for small edges, though the game outcome itself remains driven by line-ups, starting pitching and bullpen usage.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads San Francisco Giants vs. Arizona Diamondbacks on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Is this market available outside the US?

PolyGram 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.

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 PolyGram?

Zero. PolyGram 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.