San Francisco Giants vs. Milwaukee Brewers

Platform comparison

Active sub-markets

Market context

The Giants and Brewers meet on 1 June at 7:40 PM ET in a regular-season MLB fixture. Current implied probability favours the Brewers at 57 per cent, with the Giants sitting at 43 per cent. The settlement window extends to 8 June, allowing for postponement scenarios common in early summer baseball when weather disruptions occur along the US coasts.

Historical matchups between these franchises show competitive balance. Over the past five seasons, the Giants have won roughly 48 per cent of head-to-head encounters, whilst the Brewers' recent form has been marginally stronger in divisional play. The 43 per cent probability for San Francisco reflects their mid-table standing relative to Milwaukee's stronger 2025 positioning, though single-game variance remains substantial. Comparable June fixtures in prediction markets typically see probability shifts of 5–8 percentage points once starting pitchers are confirmed and injury reports finalise.

Key catalysts include roster announcements in the 48 hours before first pitch—particularly any late-season injuries or bullpen adjustments—and weather forecasts for the venue. Recent reporting from MLB.com and ESPN has flagged potential rain systems affecting the Pacific coast on game day, which could influence both play quality and postponement risk. Traders should monitor official lineup confirmations and any travel delays. Funding depth on this market correlates with deposit availability; higher liquidity typically emerges once SEPA transfers and USDC on-ramps settle, usually 24–36 hours before event time, when serious position-takers enter the book.

Methodology

We track San Francisco Giants vs. Milwaukee Brewers 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 Polymarket Deposit 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.

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 Polymarket Deposit UK?

Zero. Polymarket Deposit 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.