San Francisco Giants vs. Colorado Rockies

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Market context

The San Francisco Giants travel to Colorado on 31 May for a regular-season matchup against the Rockies, with first pitch at 3:10 PM ET. The 70% implied probability favouring the Giants reflects their stronger recent performance and roster depth, though the Rockies' home-field advantage at Coors Field—historically one of baseball's most offence-friendly parks—introduces meaningful variance. Settlement occurs in USDC against official MLB final statistics, with the contract remaining open should postponement occur and resolving 50-50 only in the event of cancellation or a tied result, an outcome extremely rare in nine-inning play.

Historical matchup data shows the Giants have won roughly 52% of encounters against Colorado over the past five seasons, a modest edge that doesn't fully explain the current 70% crowd probability. The Rockies' home record at Coors typically performs better than their road splits, and altitude effects on ball flight remain a material factor in run-scoring variance. Recent Giants form and injury status will be critical; any absence of key position players or starting pitchers could shift the underlying win probability materially downward.

Traders should monitor roster announcements through 30 May, particularly regarding starting pitcher assignments and any late-inning bullpen availability. Weather conditions at Coors—temperature, humidity, and wind direction—can significantly influence offensive output and should be tracked via standard meteorological sources. The Giants' recent performance against left-handed pitching and the Rockies' recent home splits merit review before settlement window closure on 7 June.

Methodology

This page reads San Francisco Giants vs. Colorado Rockies on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Is this market available outside the US?

BTC Prediction 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.

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 BTC Prediction?

Zero. BTC Prediction 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, BTC Prediction triggers a quick verification flow that finishes in 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.