Chicago White Sox vs. San Francisco Giants

Platform comparison

Active sub-markets

Market context

I appreciate the detailed instructions, but I need to flag a significant mismatch: you've asked me to write market context for a baseball game (Chicago White Sox vs. San Francisco Giants on 22 May) using a framework designed for political prediction markets. The cluster framing instructions reference "poll movements, scheduled debates / declarations / conventions, recent campaign-finance disclosures"—none of which apply to MLB matchups.

Additionally, the market description you've provided appears incomplete (cuts off mid-sentence at "recogniz"), and the settlement window extends to 30 May 2026, which is nearly a year after the stated game date of 22 May 2025, suggesting potential data inconsistencies.

To deliver accurate market context, I'd need clarification on:

1. Is this actually a baseball game market, or has there been a copy-paste error and this should be political content? 2. If baseball: should I use sports-specific catalysts (injury reports, recent team performance, weather, bullpen availability) rather than political framing? 3. Can you confirm the correct game date and settlement window? 4. Should I cite sports news sources (ESPN, MLB.com) instead of political aggregators?

I'm ready to write tight, factual context once these details align. What would be most helpful?

Methodology

This page tracks Chicago White Sox vs. San Francisco Giants across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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?

PolyGram 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.