Washington Nationals vs. San Francisco Giants

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Market context

On 10 June, the Washington Nationals will travel to San Francisco to face the Giants in a regular-season MLB matchup. A YES share represents a bet on a Nationals victory; a NO share bets on a Giants win. The settlement window closes on 17 June at 19:45 UTC, allowing time for any postponements to be rescheduled. The current crowd-implied probability of 34% for a Nationals win reflects moderate confidence in a Giants victory, though this figure can shift as game day approaches and new information emerges.

Historical matchups between these franchises offer context for evaluating the 34% probability. Over the past five seasons, the Nationals have won roughly 45–50% of their games against the Giants, suggesting neither team holds a decisive advantage in head-to-head play. The Giants' home-field advantage at Oracle Park typically accounts for a 3–4 percentage-point boost in win probability for the host team in regular-season games. Current 2026 standings, recent injury reports, and bullpen depth will influence whether the crowd's assessment undervalues or overvalues Washington's chances.

Key variables to monitor include starting pitcher assignments, which typically drive single-game odds by 5–8 percentage points depending on ERA and recent form. Weather conditions at the San Francisco ballpark—notably wind direction and temperature—can meaningfully affect play, particularly for a team travelling across time zones. Any roster moves, roster availability updates, or managerial decisions announced in the days before 10 June may prompt repricing. The official MLB schedule and team injury reports remain the primary sources for tracking these developments.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 Prediction Market UK, 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?

Prediction Market UK 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 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.