Kansas City Royals vs. St. Louis Cardinals

Platform comparison

Active sub-markets

Market context

Polymarket is pricing this Royals-Cardinals contract at 100% YES, so the conditional tokens are effectively all pointed at a Kansas City win and the USDC exposure is entirely on that side. The game is scheduled for 2:15pm ET on 16 May, and the market only resolves once the official final score is known. For a trader, that leaves almost no disagreement in price and little room for probabilistic nuance unless the event itself is delayed, suspended or otherwise altered before completion.

The main read-through from comparable market cases is that a 100% price on Polymarket usually reflects a near-certain settlement expectation rather than a judgement that the result is literally guaranteed. In baseball, late changes still matter: a postponed or suspended game stays open until completed, and a cancelled game or tie would push resolution to 50-50 under the contract terms. Recent coverage on ESPN and MLB.com indicates the teams are already in the day’s live game cycle, so the practical catalyst is any official delay, lineup change or weather-driven interruption rather than pre-match sentiment. The Cardinals’ official scoreboard also shows the fixture as active, which is the key dependency for how the token settles.

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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

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?

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 does it cost to trade on PolyGram?

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

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.

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.