Arizona Diamondbacks vs. St. Louis Cardinals

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Active sub-markets

Market context

An upcoming MLB matchup between the Arizona Diamondbacks and St. Louis Cardinals, scheduled for 7:45pm ET on 24 June at Busch Stadium in St. Louis, has concluded with the Diamondbacks securing the win. The game featured Arizona (40-39) against St. Louis (42-35), with the Cardinals holding a slight home-advantage edge in the betting lines prior to play [1].

Historically, 100% crowd-implied probabilities in live sports prediction markets rarely materialise unless the event has already finished or the outcome is mathematically certain before settlement. Comparable cases from the 2025 MLB season show that such extreme odds typically signal a resolved event rather than a genuine forecast, as sportsbooks usually maintain divergent lines (e.g., STL -119) until the final whistle [1][3]. The current 100% YES probability aligns with post-game resolution rather than pre-match speculation, mirroring patterns where prediction markets lag sportsbook closures by only minutes after a result is confirmed.

Traders should monitor official final statistics from the MLB as the primary resolution source, noting that any postponement extends the settlement window until completion [2]. Recent coverage confirms the game took place at the scheduled time with no cancellation, and broadcaster feeds (Cardinals.TV, Dbacks.TV) have already disseminated the final score [4][5]. With the settlement window ending 1 July 2026, the market now serves purely as a verification mechanism for the confirmed Diamondbacks victory, leaving no room for odds divergence between analyst consensus and the closed outcome.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Best Prediction Markets, 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Best Prediction Markets triggers a quick verification flow that finishes in 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.