Washington Nationals vs. San Francisco Giants

Platform comparison

Active sub-markets

Market context

The Nationals travel to San Francisco on 10 June for a regular-season matchup against the Giants, with Polymarket currently pricing the Nationals' victory at 34 per cent implied probability—a 2-to-1 underdog position in conditional token form. This reflects the Giants' home-field advantage and relative standing within their division at the time of market pricing.

Washington's recent form and pitching availability will shape how traders reassess this contract through settlement. The Nationals finished 2024 with a 76-86 record and have historically struggled against West Coast opponents in early-season travel; however, individual game outcomes depend heavily on starting pitcher matchups and bullpen depth. The Giants, whilst competitive at home, have shown inconsistency this season. Traders should monitor roster updates and injury reports released by both clubs in the days before the fixture, particularly any late-inning reliever availability or unexpected lineup changes that could shift the conditional token distribution on Polygon.

Weather conditions at Oracle Park and any scheduling adjustments announced by MLB will also influence trading activity before the settlement window closes on 17 June. If either team announces significant injuries or roster moves within 48 hours of first pitch, the 34 per cent pricing may shift materially. The market's current lean towards the Giants reflects standard home-field valuation rather than a decisive skill gap, leaving room for new information to rebalance the USDC-denominated positions held across the network.

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

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 Kalshi 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.

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 Kalshi UK?

Zero. Kalshi UK 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.