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Pittsburgh Pirates vs. St. Louis Cardinals

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

1st 5 Innings O/U 2.5 73% 1st 5 Innings O/U 3.5 63% O/U 7.5 56% 1st 5 Innings O/U 4.5 50% Volume: $133K Liquidity: $779K Closes: 5 Sept 2026
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Pittsburgh Pirates vs. St. Louis Cardinals

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Kalshi Fees) Pick
polygram.ink (preferred broker)
 73% 27% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Place a position →
Polymarket (direct)
polymarket.com
 73% 27% 0% Geo-blocked in US/UK/EU USDC, on-chain Place a position →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD Place a position →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR Place a position →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) Place a position →

Outcome probabilities

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

OutcomeProbability
1st 5 Innings O/U 2.573%
1st 5 Innings O/U 3.563%
O/U 7.556%
1st 5 Innings O/U 4.550%
NRFI49%
Extra Innings49%
Pittsburgh Pirates vs. St. Louis Cardinals47%
O/U 8.546%
1st 5 Innings O/U 5.537%
O/U 9.537%
Spread -1.536%
Spread -1.535%
1st 5 Innings Spread -1.532%
Spread -2.527%
1st 5 Innings O/U 6.526%
1st 5 Innings Spread -1.525%
Spread -2.525%

Market context

Based on real-money crowd forecasting, pittsburgh pirates vs. st. louis cardinals stands at 73% likelihood according to current market consensus. In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for August 29 at 2:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pitt…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 73% for "Pittsburgh Pirates vs. St. Louis Cardinals".

1st 5 Innings O/U 2.5 73% Other 27%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $133K.

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 Kalshi Fees, 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.
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.
Do I need to KYC for this market?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Alex ChenAlex ChenPrediction Market AnalystandJordan LeeJordan LeeSports Prediction Reporter

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