Chicago Cubs vs. San Francisco Giants

Platform comparison

Active sub-markets

Market context

The Cubs travel to San Francisco on 12 June for an evening fixture against the Giants, with the market currently pricing a Cubs victory at 36 per cent. This represents a modest underdog position despite Chicago's stronger recent form in head-to-head matchups this season. The settlement window extends to 20 June, allowing for postponement contingencies common in early summer baseball when weather delays occur.

Historical Cubs-Giants records show the Cubs have won 11 of their last 17 meetings dating back to 2023, establishing them as slight favourites in direct competition. However, the Giants' home-field advantage at Oracle Park carries measurable weight—San Francisco has maintained a .520 win rate at home this season, whilst the Cubs' road record sits at .485. The 36 per cent probability suggests traders are weighting the Cubs' superior overall record against the Giants' home-ground edge, with neither factor decisively dominating the implied odds.

Traders should monitor starting pitcher assignments, which typically confirm 48 hours before game time. Recent injury reports from both rosters matter significantly; the Cubs have managed key position player absences throughout June, whilst the Giants' bullpen depth has fluctuated. Weather forecasts for San Francisco Bay on 12 June will influence game conditions, particularly wind patterns affecting fly ball distances at Oracle Park. Any roster moves or late-inning availability changes announced between now and first pitch could shift the probability meaningfully, especially if either team's primary starter requires replacement.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Today, which mirrors the Polymarket order book directly.

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 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.

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.

What does it cost to trade on Prediction Today?

Zero. Prediction Today routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today triggers a quick verification flow that finishes in minutes.