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St. Louis Cardinals vs. Chicago Cubs

"St. Louis Cardinals vs. Chicago Cubs" — live football odds plus comparison across the four major prediction venues.

1st 5 Innings O/U 2.5 74% 1st 5 Innings O/U 3.5 60% O/U 7.5 54% NRFI 49% Volume: $166K Liquidity: $1.3M Closes: 21 Aug 2026
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St. Louis Cardinals vs. Chicago Cubs

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via World Cup 2026 Favorites) Pick
polygram.ink (preferred broker)
74% 26% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
74% 26% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

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

OutcomeProbability
1st 5 Innings O/U 2.574%
1st 5 Innings O/U 3.560%
O/U 7.554%
NRFI49%
1st 5 Innings O/U 4.547%
Spread -1.545%
O/U 8.545%
1st 5 Innings Spread -1.538%
St. Louis Cardinals vs. Chicago Cubs37%
1st 5 Innings O/U 5.535%
O/U 9.535%
Spread -2.534%
Spread -1.527%
1st 5 Innings O/U 6.526%
1st 5 Innings Spread -1.523%
Spread -2.520%
Extra Innings9%

Market context

The St. Louis Cardinals face the Chicago Cubs on 14 August in a National League Central divisional matchup, with settlement occurring after the scheduled 2:20 PM ET first pitch. The current 37% implied probability for a Cardinals victory reflects the Cubs' marginal status as favourites in what remains a competitive regular-season fixture with playoff implications for both franchises.

Historical head-to-head records between these clubs show the Cubs have maintained a slight edge in recent seasons, though divisional games often diverge from season-long trends due to roster-specific matchups and bullpen availability. The Cardinals' win probability at 37% sits below their typical strength in home-and-away splits; context matters here—whether the game is played in St. Louis or Chicago materially affects baseline expectations, as does the specific pitching assignment and recent offensive form of each team's lineup.

Traders should monitor roster updates through to game time, particularly injury reports affecting starting pitchers and key position players. Recent transactions, trades, or suspensions announced in the week preceding 14 August could shift the line meaningfully. The Cubs' recent performance trajectory—whether they've won or lost their last five games—and the Cardinals' bullpen depth heading into mid-August will influence closing-line movement. Weather conditions at game time, especially wind direction if played in Chicago, historically affect run totals and thus game outcomes in this matchup. Official MLB injury reports and team announcements typically arrive 24 hours before first pitch.

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 74% for "St. Louis Cardinals vs. Chicago Cubs".

1st 5 Innings O/U 2.5 74% Other 26%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $166K.

Methodology

Football-specific comparison page for St. Louis Cardinals vs. Chicago Cubs. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

When do sports markets resolve?
Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
Can I bet on individual matches?
Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
What are live sports odds on Polymarket?
Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
What's the difference between match odds and outright odds?
Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
Can I import form data and lineups?
This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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