San Francisco Giants vs. Kansas City Royals

Platform comparison

Market context

The San Francisco Giants and Kansas City Royals are scheduled to play a single MLB game, and this market pays out on the outright winner: a **YES** share means the Giants win, while a **NO** share means the Royals win. If the game is postponed, the market stays open until it is completed; if it is cancelled without a make-up, or ends in a tie, the contract resolves 50-50, so traders are really assessing only the final, official result.

A 55% crowd-implied probability for **YES** suggests the market is leaning slightly towards San Francisco, but not decisively. That is broadly in line with recent preview data showing a tight contest rather than a strong mismatch: one model had Kansas City at 51.3% and San Francisco at 48.7%, while several price screens for the matchup have oscillated around near-pick’em territory, with small edges flipping between the teams depending on the source and assumptions. In prediction-market terms, that kind of pricing usually reflects a game where late information can matter more than season-long reputation.

The main catalysts to watch are the confirmed starting pitchers, any late lineup changes, and whether the game proceeds on schedule at all. MLB markets can move quickly once clubs announce pitchers and batting orders, because those details change run environment and win probability more than the headline fixture does. This contract also depends on an official final result, so weather delays, postponements, or a rescheduled doubleheader can alter timing even if they do not change the basic win/lose setup.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market 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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Market UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.