Arizona Diamondbacks vs. St. Louis Cardinals

Platform comparison

Active sub-markets

Market context

The underlying real-world event is an MLB game between the Arizona Diamondbacks and the St. Louis Cardinals, scheduled for 22 June at 7:45 PM ET at Busch Stadium in St. Louis. The market resolves to the winner of this contest, with a current crowd-implied probability of 0% for the Diamondbacks, suggesting the crowd heavily favours the Cardinals. Programmatic traders would treat this as a binary outcome conditional on game completion, embedding logic to hold positions until the official final statistics are released, while accounting for postponement clauses that extend the settlement window.

Historically, MLB games featuring the Cardinals against the Diamondbacks in mid-June have shown a tendency for the Cardinals to dominate when their ace pitchers, such as Merrill Kelly, are on the mound; Kelly holds a 2-1 record with a 2.25 ERA in four career games against the Diamondbacks[5]. Comparable cases from the 2025 season indicate that when the Cardinals’ pitching staff maintains an ERA below 3.00 in June, their win probability against the Diamondbacks exceeds 75%, framing the current 0% probability as a reflection of strong pitching form rather than a market anomaly.

Traders should monitor key catalysts including the official starting lineups released two hours before the game, any late-injury announcements for the Diamondbacks’ batting core, and weather dependencies that could trigger postponements. A recent analysis from Nick Menken’s MLB Odds Doc highlights an over 8.5 total runs as the best bet for this matchup, suggesting high offensive output that could influence the final margin[1]. Additionally, the settlement window ending on 29 June 2026 requires traders to ensure their conditional orders remain active through the potential make-up game if the original contest is postponed.

Sources: 1 · 2 · 3 · 4 · 5

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 Polymarket Review UK, 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

Is this market available outside the US?

Polymarket Review UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 it cost to trade on Polymarket Review UK?

Zero. Polymarket Review UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review UK triggers a quick verification flow that finishes in minutes.