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Chicago Cubs vs. St. Louis Cardinals

Live odds for "Chicago Cubs vs. St. Louis Cardinals" pulled from the Polygon order book, alongside the platform attributes of every venue that runs this contract.

O/U 4.5 57% Chicago Cubs vs. St. Louis Cardinals 52% Extra Innings 50% O/U 5.5 37% Volume: $1.5M Liquidity: $671K Closes: 6 Aug 2026
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Chicago Cubs vs. St. Louis Cardinals

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Best Prediction Markets) Pick
polygram.ink (preferred broker)
 57% 43% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Live odds →
Polymarket (direct)
polymarket.com
 57% 43% 0% Geo-blocked in US/UK/EU USDC, on-chain Live odds →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD Live odds →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR Live odds →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) Live odds →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
O/U 4.557%
Chicago Cubs vs. St. Louis Cardinals52%
Extra Innings50%
O/U 5.537%
Spread -1.530%
O/U 6.527%
Spread -1.517%
Spread -2.517%
O/U 7.516%
O/U 8.511%
Spread -2.59%
O/U 9.57%
NRFI0%
1st 5 Innings Spread -1.50%
1st 5 Innings Spread -1.50%
1st 5 Innings O/U 2.50%
1st 5 Innings O/U 3.50%
1st 5 Innings O/U 4.50%
1st 5 Innings O/U 5.50%
1st 5 Innings O/U 6.50%

Market context

Chicago Cubs vs. St. Louis Cardinals — current market-implied probability: 57%. In the upcoming MLB game between the Chicago Cubs and St. Louis Cardinals, scheduled for July 30 at 2:15PM ET: This market will resolve to "Chicago Cubs" if the Chicago Cubs win the game. This marke…

Live Data & Statistics

The Polymarket order book prices O/U 4.5 at 57% for "Chicago Cubs vs. St. Louis Cardinals".

O/U 4.5 57% Other 43%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $1.5M.

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 Best Prediction Markets, 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.
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.
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 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.
Maya TorresMaya TorresFinancial Markets WriterandPriya SharmaPriya SharmaCrypto & DeFi Analyst

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