St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The Cardinals visit Cincinnati on 23 May for a regular-season matchup at 7:15PM ET, with the settlement window extending through 30 May to accommodate any postponements. Polymarket currently prices this contract at 0% YES, reflecting either a technical liquidity issue or extreme confidence in a Cincinnati victory. The conditional token structure on Polygon means traders are holding USDC-denominated positions that resolve based on official MLB final statistics, with the 50-50 tie-resolution clause applying only if the game is cancelled outright with no make-up scheduled.

Historical context matters here: the Cardinals and Reds have split their recent seasons fairly evenly, though Cincinnati has shown marginal home-field advantage in divisional play. The 0% pricing is unusual for any live sports market and typically signals either absent liquidity on the YES side or a data feed issue rather than genuine market consensus. Comparable MLB matchups on Polymarket rarely trade at such extremes unless one team is mathematically eliminated from playoff contention, which neither club faces in late May.

Traders should monitor roster updates and starting pitcher announcements, typically confirmed 24–48 hours before game time. Weather conditions in Cincinnati—particularly wind direction affecting fly balls at Great American Ball Park—historically influence run totals. Recent injury reports from both organisations' official channels will clarify lineup depth. The settlement window's extension through 30 May provides buffer for rain delays, common in the Midwest during late spring, though this also means position holders face extended capital lock-up if postponement occurs.

Methodology

This page reviews St. Louis Cardinals vs. Cincinnati Reds across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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 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.