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St. Louis City SC vs. San Diego FC odds, Oct 31: Kalshi vs Polymarket

St. Louis City SC 58% on Kalshi, 59% on Polymarket. Both exchanges' prices for every outcome of St. Louis City SC vs. San Diego FC, Oct 31, $2 traded in 24 hours, updated every 45 seconds.

Sat, Oct 31, 2026, 3:00 PM ET · MLS games · $2 traded in 24h across both venues

St. Louis City SC: Kalshi $0.58 vs Polymarket $0.59, $0.00

Mid prices, in dollars on a contract that pays $1 if it happens: $0.58 is a 58% chance. The gap is Kalshi minus Polymarket.

Two separate exchanges, two accounts. Links may carry a referral code, which never changes what is shown. Disclosures.

-13.94% after fees
Buy St. Louis City SC @ Kalshi $0.60, San Diego FC @ Polymarket $0.25, Draw @ Kalshi $0.24

All outcomes

OutcomeKalshi bid / askPolymarket bid / askGap, + = Kalshi higher
St. Louis City SC$0.56 / $0.60$0.53 / $0.64$0.00
San Diego FC$0.18 / $0.24$0.16 / $0.25$0.00
Draw$0.18 / $0.24$0.18 / $0.26−$0.01

Price history, last 3 days

4 snapshots · teal Kalshi · violet Polymarket

How this is matched

Games are matched across the two exchanges by league, team codes and date. Polymarket prices come from its live order book, Kalshi from its public API. Refreshed every 45 seconds.

What this is not

Read-only. Nothing here places or routes orders and nothing is advice. Fees, slippage and the time it takes to move money between venues are not in these numbers.

More

All MLS games disagreements · Full price history · Daily reports