St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The St. Louis Cardinals meet the Cincinnati Reds in a scheduled MLB game at Great American Ball Park, with the market currently close to a coin flip at 47% for the Cardinals. That kind of pricing is consistent with a matchup where neither side has a clear structural edge and the outcome is likely to hinge on the starting pitching and early run production rather than long-term form alone. Recent comparable meetings have tended to be tight enough to swing on a single innings stretch: Cincinnati beat St. Louis 3-1 in late April 2025, while St. Louis also took a 5-0 shutout in the same period, underlining how quickly the balance can change in this rivalry.

For traders, the main catalyst is the official line-up and pitching information before first pitch, as those details usually move MLB moneyline prices more than broad season-to-date records. The Reds have also had stretches where the offence has gone quiet, including a 3-0 loss to St Louis reported by AP-style coverage in September 2025, which is the sort of recent result market participants may lean on when assessing whether Cincinnati can score enough at home. Sofascore lists the game for 22 May 2026 at 10:40pm UTC, and any late change to the starting pitcher, rest day decisions, or confirmed batting order should be the key information to watch before the market settles.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks St. Louis Cardinals vs. Cincinnati Reds across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

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.

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.