Arizona Diamondbacks vs. St. Louis Cardinals

Platform comparison

Active sub-markets

Market context

The Arizona Diamondbacks face the St. Louis Cardinals at Busch Stadium on 23 June 2026, with the game set for 7:45PM ET. On Polymarket today, this contract trades at a 0% implied probability for a Diamondbacks win, a stark divergence from the 54.3% win probability shown by ESPN’s live models[4]. This pricing suggests the market has either misread the on-chain conditional tokens or is reacting to a specific, non-public dependency, as USDC liquidity on Polygon remains thin for this event.

Historically, such a 0% price in MLB markets has only appeared when a team is confirmed to have a critical injury list collapse or a pitcher is pulled pre-game, as seen in the May 2025 Cardinals-Diamondbacks matchup where odds vanished after Rodriguez’s late scratch[2]. In comparable cases, the probability rebounded sharply once official final statistics confirmed the game proceeded, indicating the current pricing may be an overreaction to a transient schedule dependency rather than a true outcome certainty.

Traders must monitor the official starting lineups announced by MLB within two hours of game time, as Rodriguez (5-2, 2.55 ERA) and Leahy (5-3, 4.64 ERA) are both listed as active but vulnerable to late changes[1]. Any delay in the Fox Sports or ESPN lineup confirmation could trigger a cascade in conditional token values, while a confirmed postponement would keep the market open until completion, per the resolution rules[5]. The combined score line of 8.5 also suggests a tight game where a single pitching error could swing the outcome, making real-time lineup data the primary catalyst.

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

Is this market available outside the US?

Polymarket Scam? 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 Scam??

Zero. Polymarket Scam? 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 Scam? triggers a quick verification flow that finishes in minutes.