San Francisco Giants vs. Colorado Rockies

Platform comparison

Active sub-markets

Market context

The San Francisco Giants face the Colorado Rockies on 31 May at 3:10 PM ET in a regular-season matchup. The 79% implied probability favours the Giants, reflecting their stronger roster composition and recent performance trajectory relative to the Rockies' rebuilding phase. Settlement occurs on 7 June, allowing a week for potential postponements or rescheduling before final resolution.

Historical context suggests this probability sits within expected ranges for inter-divisional play where one team holds a clear competitive advantage. The Giants' win rate against sub-.500 opponents typically hovers around 55–65%, whilst the Rockies' performance at Coors Field introduces variance that can compress win probabilities by 5–10 percentage points. Comparable fixtures from the 2024 season show similar matchups resolving within the 75–82% range for the favoured team, making the current 79% figure neither extreme nor anomalous.

For programmatic traders, the key variables centre on starting pitcher announcements and injury reports released 24–48 hours before first pitch. Monitor MLB's official roster updates and team injury bulletins; pitching changes can shift implied probabilities by 3–7 points. Weather conditions at Oracle Park and elevation effects at Coors Field merit tracking through meteorological feeds, as wind direction and temperature fluctuations affect run-scoring environments. The settlement window's seven-day buffer accommodates rain delays common to late May scheduling, though cancellation without rescheduling remains statistically rare in regular-season play.

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 Polymarket Review UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Review 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?

Polymarket Review 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.