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Philadelphia Phillies vs. St. Louis Cardinals

How the prediction-market book is pricing "Philadelphia Phillies vs. St. Louis Cardinals" right now, with a side-by-side platform comparison and zero-fee CTAs.

O/U 3.5 56% Extra Innings 50% O/U 2.5 50% Philadelphia Phillies vs. St. Louis Cardinals 49% Volume: $291K Liquidity: $742K Closes: 18 Aug 2026
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Philadelphia Phillies vs. St. Louis Cardinals

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Best Prediction Markets UK) Pick
polygram.ink (preferred broker)
56% 44% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle View on Polymarket →
Polymarket (direct)
polymarket.com
56% 44% 0% Geo-blocked in US/UK/EU USDC, on-chain View on Polymarket →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD View on Polymarket →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR View on Polymarket →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) View on Polymarket →

Outcome probabilities

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

OutcomeProbability
O/U 3.556%
Extra Innings50%
O/U 2.550%
Philadelphia Phillies vs. St. Louis Cardinals49%
O/U 5.541%
O/U 4.529%
Spread -1.528%
Spread -1.521%
Spread -2.514%
O/U 6.514%
Spread -2.511%
O/U 7.58%
O/U 8.55%
O/U 9.53%
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

Philadelphia Phillies vs. St. Louis Cardinals — current market-implied probability: 56%. In the upcoming MLB game between the Philadelphia Phillies and St. Louis Cardinals, scheduled for August 11 at 7:45PM ET: This market will resolve to "Philadelphia Phillies" if the Philadelphia Phill…

Live Data & Statistics

The Polymarket order book prices O/U 3.5 at 56% for "Philadelphia Phillies vs. St. Louis Cardinals".

O/U 3.5 56% Other 44%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $291K.

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 UK, 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.

UK Frequently Asked Questions

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.
Do I need to KYC for this market?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
What are the best prediction markets for UK traders in 2026?
For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.
and

Trade Philadelphia Phillies vs. St. Louis Cardinals on Best Prediction Markets UK

Live order book, 0% fees, USDC settlement in seconds.

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Related Topics

Sports