Arizona Diamondbacks vs. San Francisco Giants

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Market context

The Arizona Diamondbacks face the San Francisco Giants on 25 May at 5:05 PM ET in a regular-season matchup. The current crowd-implied probability of 56% for an Arizona victory reflects modest confidence in the Diamondbacks, though the Giants remain competitive at 44%. Settlement occurs in USDC upon official MLB final statistics, with the market remaining open if postponement occurs and resolving 50-50 only in the event of cancellation or a tie.

Historically, Arizona has held a slight edge in recent head-to-head records, though divisional matchups between these clubs tend to compress probability spreads as both teams field roster depth sufficient for competitive play. The 56% probability sits within the typical range for home-field advantage scenarios in May baseball, where weather stability and roster availability remain relatively consistent. Giants-Diamondbacks contests have rarely settled at extreme probabilities, suggesting the market is pricing this as a genuine toss-up with marginal directional lean.

Traders should monitor roster updates through 25 May, particularly starting pitcher assignments and any late injury reports affecting key position players. Recent weather forecasts for the game location and any last-minute lineup changes announced by either club could shift the probability materially. Funding rates on related sports derivatives across major crypto exchanges remain subdued, indicating no significant whale positioning ahead of the match. The settlement window extending to 1 June allows for postponement coverage, though May weather delays in this matchup are historically infrequent.

Methodology

This page reads Arizona Diamondbacks vs. San Francisco Giants 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.

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, PolyGram triggers a quick verification flow that finishes in minutes.