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St. Louis Cardinals vs. Toronto Blue Jays

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

1st 5 Innings O/U 2.5 80% 1st 5 Innings O/U 3.5 69% 1st 5 Innings O/U 4.5 54% NRFI 53% Volume: $289K Liquidity: $1.9M Closes: 9 Aug 2026
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St. Louis Cardinals vs. Toronto Blue Jays

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Who Will Win 2026) Pick
polygram.ink (preferred broker)
80% 20% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle See live odds →
Polymarket (direct)
polymarket.com
80% 20% 0% Geo-blocked in US/UK/EU USDC, on-chain See live odds →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD See live odds →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR See live odds →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) See live odds →

Outcome probabilities

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

OutcomeProbability
1st 5 Innings O/U 2.580%
1st 5 Innings O/U 3.569%
1st 5 Innings O/U 4.554%
NRFI53%
O/U 8.553%
St. Louis Cardinals vs. Toronto Blue Jays45%
O/U 9.543%
1st 5 Innings O/U 5.543%
Spread -1.537%
O/U 10.536%
Spread -1.534%
1st 5 Innings O/U 6.532%
1st 5 Innings Spread -1.531%
1st 5 Innings Spread -1.529%
Spread -2.527%
Spread -2.527%
Extra Innings7%

Market context

The St. Louis Cardinals–Toronto Blue Jays game is being priced with the Cardinals at an implied **45%** to win, so Toronto sits as the modest favourite and St. Louis the small underdog. That is broadly in line with the recent market and form picture: ESPN’s pre-game projection for the latest meeting made Toronto a clear favourite at 57.9%, and the Blue Jays have already taken this series, winning on 31 July before backing it up on 1 August.[1][2]

The handicapper’s read is that the current 45% Cardinals price leaves a narrow edge debate rather than a strong misprice. Recent comparable meetings have leaned Toronto’s way, including a 3-1 win on 31 July and a 5-1 win on 1 August, while the Blue Jays have also extended their head-to-head run against St. Louis to eight straight.[1][2] That said, one-game MLB pricing is often driven as much by the starter matchup and bullpen availability as by season records, so the underdog case for St. Louis is usually built on lineup bounce-back and pitching edge rather than recent results alone.[2][4]

The key catalysts are the confirmed starting pitchers, any late scratch to the batting order, and bullpen usage after the previous two games in this set. Toronto has also had recent schedule context in its favour, with a day off before beating Washington 5-2 and then carrying that momentum into the Cardinals series, while St. Louis arrived after a 10-inning loss to Chicago and a 2-6 homestand.[4] If market consensus pushes Toronto further towards favourite status, the value angle is more likely to sit with St. Louis as a contrarian dog; if a Cardinals starter edge emerges, the 45% line may prove too low.[2][4]

Sources: 1 · 2 · 3 · 4 · 5

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 80% for "St. Louis Cardinals vs. Toronto Blue Jays".

1st 5 Innings O/U 2.5 80% Other 20%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $289K.

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 Who Will Win 2026, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?
Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
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 Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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Related Topics

Sports