San Francisco Giants vs. Kansas City Royals

Platform comparison

Market context

The San Francisco Giants face the Kansas City Royals in a scheduled MLB game on 20 July at 7:40PM ET, with the market currently implying a 0% chance of a Giants victory. This near-zero probability is unusual for a regular-season matchup between two active franchises and suggests either a data error, a known roster collapse, or a pre-emptive market freeze pending official confirmation of a cancellation or postponement.

Historically, MLB markets with 0% implied probability for one side typically resolve either as a forfeit, a cancellation with no make-up, or a technical glitch where the winning team was misidentified in the initial listing. Comparable cases from 2024–2025 show that when a team is listed with 0% chance, the market often remains open until the game is officially played, and if the game is cancelled entirely, it resolves 50–50 rather than confirming the implied loser.

Traders should monitor the official MLB schedule updates and team injury reports for the Giants, particularly any announcements regarding player availability or venue issues. A recent report from MLB.com notes that the Giants have faced multiple roster disruptions in July 2026 due to illness and travel complications, which could directly impact their ability to field a competitive team [1]. Programmatic traders should set conditional orders to trigger only once the game status is confirmed as “played” rather than “postponed” or “cancelled,” and integrate real-time feeds from the official MLB statistics API to avoid false settlements.

Methodology

We track San Francisco Giants vs. Kansas City Royals across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

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.