San Francisco Giants vs. Arizona Diamondbacks

Platform comparison

Active sub-markets

Market context

Polymarket is pricing the San Francisco Giants v Arizona Diamondbacks contract at 50% YES, with USDC locked into conditional tokens on Polygon until the game is officially decided. That near-even line suggests the market sees the matchup as broadly balanced rather than leaning on one club’s season record or a single starter edge, so the final score path matters more than the headline probability.

Recent form gives the Diamondbacks some support: they beat the Giants 12-2 in the series opener on 19 May, and Arizona has gone 10-10 in the last 20 meetings between the sides. The MLB preview also flags a meaningful pitching split, noting Justin Verlander’s 0.69 ERA across two starts this month and Brandon Pfaadt’s 0-4 record with a 5.11 ERA in five starts against San Francisco. That combination helps explain why a coin-flip price can persist even after one lopsided result.

For traders, the key watchpoints are the official line-ups, any late pitching change, and whether the game reaches a completed final rather than being delayed or suspended. ESPN’s team page and MLB’s game preview both pointed to recent offensive and pitching swings in the matchup, but the contract resolves strictly on the official result, with a postponement simply keeping it open until completion. If the game were ever cancelled outright or ended in a tie, the market would settle 50-50, which is the only non-win outcome to factor into the token value.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews San Francisco Giants vs. Arizona Diamondbacks across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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?

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.