Arizona Diamondbacks vs. St. Louis Cardinals

Platform comparison

Active sub-markets

Market context

The Arizona Diamondbacks defeated the St. Louis Cardinals 4-3 in their MLB game on Tuesday, 23 June 2026, with Eduardo Rodriguez pitching seven innings of one-run ball for the Diamondbacks[2][4]. This real-world outcome has already settled the event, meaning the prediction market for this specific game is now resolved in favour of the Diamondbacks, despite the current crowd-implied probability of 0% for the "YES" outcome suggesting a misunderstanding or lag in market data[8].

Historically, similar MLB markets where the game has concluded but the market remains open with a 0% probability often reflect a delay in the official resolution feed or a technical glitch in the on-ramp system preventing users from seeing the final result[1]. Comparable cases from the 2025 season show that when a game ends in a decisive win, markets typically resolve within minutes of the final whistle, provided the payment rails (SEPA, USDC) are functioning without friction; any persistent 0% reading usually indicates a failure in the settlement pipeline rather than a genuine doubt about the winner[3].

Traders should monitor the official MLB resolution feed and the status of the Klarna and SEPA withdrawal rails, as these determine when the market will update to reflect the Diamondbacks' victory[5]. Recent news from ESPN confirms the final score and Rodriguez's performance, serving as the primary catalyst for the market to correct its probability to 100% for the Diamondbacks[2]. Any delay in this update is likely tied to the friction in the deposit and withdrawal processes that drive book depth, rather than the sporting outcome itself.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Arizona Diamondbacks vs. St. Louis Cardinals on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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 Klarna 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.

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.

What does it cost to trade on Polymarket Klarna UK?

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

Do I need to KYC for this market?

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