Milwaukee Brewers vs. St. Louis Cardinals

Platform comparison

Market context

On Monday evening at Busch Stadium, the Milwaukee Brewers and St. Louis Cardinals face off in a regular-season MLB game where the winner is decided solely by the final score. In prediction markets, a YES share represents a bet that the Milwaukee Brewers will win, while a NO share bets they will not; the current market implies a 53% chance of a Brewers victory. This single-game event resolves definitively unless postponed, with ties or cancellations triggering a 50-50 split.

Historically, this matchup has been tightly contested, with the Cardinals holding a slight edge in total head-to-head wins (160 to 138) but the Brewers often dominating recent series. In their last five games, the Brewers won three, including a 6-2 victory on May 6 where pitcher Aaron Ashby tied the league lead in wins, while the Cardinals narrowly lost 2-1 on May 27. Such volatility means a 53% probability is not a strong favourite but reflects the Brewers' superior away record (26-15) compared to the Cardinals' home form (23-21).

Traders should monitor pitching lineups and injury updates, particularly the Brewers' recent placement of RHP Coleman Crow on the 15-day injured list for a forearm strain, which could alter their rotation depth. With the game scheduled for 7:45PM ET, any late changes to the starting pitchers or weather delays at Busch Stadium will directly impact the settlement. The market remains open until the game concludes, so real-time score updates and official MLB final statistics are the only definitive resolution sources.

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Methodology

We track Milwaukee Brewers vs. St. Louis Cardinals across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.

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 reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.