Pittsburgh Pirates vs. St. Louis Cardinals

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Active sub-markets

Market context

The Pittsburgh Pirates and St. Louis Cardinals are due to meet in St. Louis on 21 May, with the market settling on the official result if the game is completed and 50-50 only if it is cancelled outright or ends level. A 27% yes price implies the Pirates are a clear underdog, which is consistent with recent head-to-head results: St Louis swept Pittsburgh in late April, while the Pirates replied with a 7-0 win at Busch Stadium on 20 May, led by a four-hit showing from Konnor Griffin. That sort of split is typical of divisional matchups, where short-run variance can be large even when one side has the stronger broader record.

For context on accessibility and compliance, these markets sit in a grey zone that matters by jurisdiction: Germany’s GlüStV framework treats unlicensed online wagering and many gaming-style contracts strictly, while the US CFTC can still assert reach where a contract is deemed a derivatives product rather than a simple contest. On a platform basis, “no-KYC up to $1,500” usually means a user can trade or withdraw within that cap without submitting identity documents, but higher activity typically triggers verification; that affects who can practically access the market, not how it resolves.

For the game itself, the main catalysts are the confirmed line-ups, starting pitchers and any late injury or rest news released before first pitch, plus weather or scheduling changes that could force a delay or washout. The 20 May shutout showed Pittsburgh can swing quickly if the bats get going, but St Louis have already shown they can separate early when their offence clicks. Traders should also watch whether the club announces bullpen usage from the previous night, as that can materially affect late-game win expectancy in a day-after rematch.

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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

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

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.

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.

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, PolyGram 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.