San Francisco Giants vs. Kansas City Royals

Platform comparison

Market context

The San Francisco Giants and Kansas City Royals played an MLB game on Monday, 20 July 2026, at 7:40 p.m. ET, with the Royals securing a 4–3 victory via Nick Loftin’s ninth-inning squeeze bunt [3]. The market in question, which resolves on the winner of that specific contest, now shows a 0% implied probability for a Giants win, reflecting the game’s completed status and the confirmed outcome.

Historically, prediction markets that remain open after a game’s result is known—often due to delayed settlement or technical lag—tend to correct rapidly once official statistics are published. In similar MLB cases, platforms like Kalshi and Betfair adjust odds within minutes of the final score being logged, whereas Polymarket’s peer-to-peer model can exhibit brief dislocations if liquidity is thin. The 0% YES probability here aligns with the Royals’ confirmed win, suggesting the market has already settled in practice, even if the formal window extends to 27 July 2026 [3].

Traders should monitor the official MLB final statistics page for any post-game adjustments, such as overturned calls or scoring corrections, which could theoretically alter the resolution. While no new announcements are expected for a completed game, fee structures and KYC requirements differ across books: Polymarket charges no platform fees but requires wallet verification for large withdrawals, whereas Kalshi imposes a 2% fee and full KYC for all users. On this market, the divergence is minimal since the outcome is fixed, but the settlement mechanics remain a key comparison point for platform reliability [1][2].

Sources: 1 · 2 · 3

Methodology

This page compares San Francisco Giants vs. Kansas City Royals specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Kalshi Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.