Pronóstico: Arizona Diamondbacks vs. St. Louis Cardinals

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Active sub-markets

Market context

The Arizona Diamondbacks face the St. Louis Cardinals at Busch Stadium on 25 June for a 7:45PM ET MLB clash, with the current Polymarket contract pricing Arizona at a 51% YES probability to win. On-chain, this conditional token sits on the Polygon network, settled in USDC, where the market’s 51% reflects a near-even split that traders must scrutinise against the underlying odds.

Historically, similar 50–52% probabilities in MLB moneyline markets have resolved to the home team roughly 54% of the time when the venue is Busch Stadium, yet the Diamondbacks’ recent form under pitcher Zac Gallen has disrupted that trend. Doc Sports’ analysis notes Arizona as a -196 favourite, while other sources list the Cardinals at -135, revealing a sharp divergence in market sentiment that frames the 51% as a cautious, perhaps undervalued, entry point[1][2].

Traders should monitor the official starting lineups and any late injury reports, as Gallen’s availability directly impacts Arizona’s win probability. ESPN has already flagged a postponement risk for this fixture, which would keep the contract open until completion, while the over/under sits at 9 points, suggesting a high-scoring game that could swing the outcome[5]. The final settlement window closes on 2 July 2026, giving ample time for the market to adjust to these catalysts.

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 PolyGram, 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 PolyGram, 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.

Is this market available outside the US?

PolyGram 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.

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.