San Francisco Giants vs. Kansas City Royals

Platform comparison

Market context

Polymarket is pricing San Francisco Giants vs Kansas City Royals at 56% YES, with resolution tied to the official final result on 22 July and the contract sitting on USDC-settled, Polygon-based conditional tokens. The market can stay live if the game is postponed and only closes once the matchup is completed; if it is cancelled outright or ends level, it resolves 50-50 under the stated rules.

A mid-50s price usually points to a modest lean rather than a strong conviction, which fits a single-game MLB slate where the edge can move quickly on pitching confirmations, line-up cards and late scratches. For traders, the key comparison is not the badge on the front of the jersey but whether the Giants’ implied chance is holding above a coin-flip baseline after accounting for away-game travel, starting pitcher quality and any rest-day noise around the roster.

The main catalysts are ordinary but decisive: confirmed starters, batting-order announcements and any pre-game postponement risk if weather or field conditions become an issue. If the game date or start time shifts, the contract stays open until completion, so the market is sensitive to official scheduling updates as much as to pre-match team news.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi UK. 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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.