San Diego Padres vs. St. Louis Cardinals

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Active sub-markets

Market context

The Padres travel to St. Louis on 16 June for an evening fixture against the Cardinals, with the 23% implied probability favouring the home side. Recent form has shifted the market's assessment: San Diego enters with momentum from a three-game winning streak, whilst St. Louis has dropped four of its last six contests. The Cardinals' bullpen has been particularly vulnerable over the past fortnight, posting a 5.18 ERA in relief appearances since early June, according to MLB.com's latest statistics.

Historical matchups between these franchises show the Cardinals hold a marginal advantage in head-to-head records at Busch Stadium over the past five seasons, though the Padres' improved roster composition—particularly their upgraded outfield depth—has narrowed that gap considerably. When visiting teams with winning records face the Cardinals at home, the historical win rate sits around 42%, suggesting the current 23% probability reflects some discount for San Diego's recent uptick in performance.

Traders should monitor starting pitcher assignments, which typically confirm 48 hours before first pitch. The Cardinals' rotation depth has been tested by injuries, and if they're forced to deploy a fourth-string starter, that would materially shift the matchup dynamics. Additionally, weather forecasts for St. Louis on game day—temperature and wind direction—can significantly influence outcomes at Busch Stadium's dimensions. Any late-inning roster moves or injury updates from either club's medical staff in the 72 hours preceding the match warrant close attention.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), 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

Where can I trade this market with the lowest fees?

On Prediction Today, which mirrors the Polymarket order book at 0% fees. 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'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.

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.

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.