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St. Louis Cardinals vs. Arizona Diamondbacks

Five-platform snapshot of "St. Louis Cardinals vs. Arizona Diamondbacks" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

1st 5 Innings O/U 2.5 78% 1st 5 Innings O/U 3.5 67% 1st 5 Innings O/U 4.5 58% NRFI 53% Volume: $251K Liquidity: $1.0M Closes: 25 Jul 2026
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St. Louis Cardinals vs. Arizona Diamondbacks

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Prediction Today) Pick
polygram.ink (preferred broker)
 78% 22% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Live odds →
Polymarket (direct)
polymarket.com
 78% 22% 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
1st 5 Innings O/U 2.578%
1st 5 Innings O/U 3.567%
1st 5 Innings O/U 4.558%
NRFI53%
St. Louis Cardinals vs. Arizona Diamondbacks48%
1st 5 Innings O/U 5.546%
O/U 9.544%
Spread -1.538%
1st 5 Innings O/U 6.534%
1st 5 Innings Spread -1.532%
1st 5 Innings Spread -1.532%
1st 5 Innings Spread -2.524%
1st 5 Innings Spread -2.521%
Extra Innings9%

Market context

The St. Louis Cardinals vs. Arizona Diamondbacks prediction market currently prices this outcome at 78% YES. In the upcoming MLB game between the St. Louis Cardinals and Arizona Diamondbacks, scheduled for July 17 at 9:40PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win…

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 78% for "St. Louis Cardinals vs. Arizona Diamondbacks".

1st 5 Innings O/U 2.5 78% Other 22%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $251K.

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 Prediction Today, which mirrors the Polymarket order book directly.

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.
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 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.
Do I need to KYC for this market?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
David ParkDavid ParkSports Data AnalystandOliver HughesOliver HughesBlockchain & Crypto Reporter

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