Washington Nationals vs. San Francisco Giants

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Active sub-markets

Market context

The Nationals host the Giants on 8 June at 9:45 PM ET, with the market currently pricing Washington's victory chances at 43%. This represents a modest lean towards San Francisco despite the home-field advantage, suggesting the Giants enter as slight favourites in the eyes of traders. The settlement window extends to 16 June, providing a buffer should weather or scheduling issues delay play.

Washington's recent form and roster health will be the primary determinant here. The Nationals have shown inconsistency through the 2026 season, whilst San Francisco has maintained steadier performance metrics. Historical matchups between these teams over the past three seasons show a near-even split, though home teams in this fixture have won approximately 55% of contests. The 43% probability for Washington reflects neither a strong home-field edge nor a decisive Giants advantage—essentially a coin-flip with modest San Francisco tilt.

Traders should monitor lineup announcements in the 24 hours before first pitch, particularly regarding starting pitcher assignments and any late-notice injuries. Recent weather patterns for Washington DC in early June typically favour play, though afternoon thunderstorms are possible. The Giants' travel schedule and rest days leading into this matchup warrant attention, as West Coast teams occasionally show fatigue in East Coast road games. Official MLB injury reports and pitching rotations, typically confirmed by both organisations by 48 hours before game time, will likely shift the probability if key players are unavailable.

Methodology

We track Washington Nationals vs. San Francisco Giants 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

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 Prediction Today, 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 Today 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.