Live prediction market odds for St. Louis Cardinals vs. Cincinnati Reds (6:40 PM ET). Compare prices across Kalshi and Polymarket and ProphetX.
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Kalshi / Polymarket / ProphetX
2026-05-22
St. Louis Cardinals vs. Cincinnati Reds (6:40 PM ET) — MLB game scheduled for 2026-05-22. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Cincinnati Reds leads the “St. Louis Cardinals vs. Cincinnati Reds (6:40 PM ET)” event at 38.1% implied probability, followed by St. Louis Cardinals at 62.6%. A 47.5% cross-platform spread signals an active arbitrage window.
St. Louis Cardinals vs. Cincinnati Reds (6:40 PM ET) is a prediction market event currently tracked across 3 platforms (Kalshi, Polymarket, ProphetX). Cincinnati Reds leads at 38% implied probability, making it the market favorite. Other contenders include St. Louis Cardinals at 63%.
Cincinnati Reds currently leads at 38% implied probability. Behind Cincinnati Reds, St. Louis Cardinals at 63% are the next closest contenders. The 47.5% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.
Here are the latest odds across Kalshi, Polymarket, ProphetX: Cincinnati Reds: 7¢ on Kalshi, 54¢ on Polymarket, 54¢ on ProphetX. St. Louis Cardinals: 94¢ on Kalshi, 46¢ on Polymarket, 48¢ on ProphetX. The 47.5% spread across platforms highlights where markets disagree — a gap traders can exploit by buying low on one platform and selling high on another.
A price of 38¢ means the market estimates a 38% probability that Cincinnati Reds will be the outcome. Buying one share at 38¢ pays out $1.00 if correct — a 163% return — or $0 if wrong. This is the core mechanic of prediction markets: the price directly reflects the crowd's probability estimate.
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Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and ProphetX.
KalshiIf St. Louis wins the St. Louis vs Cincinnati professional baseball game originally scheduled for May 22, 2026 at 6:40 PM EDT, then the market resolves to Yes.
The following market refers to the St. Louis vs Cincinnati professional baseball game originally scheduled for May 22, 2026 at 6:40 PM EDT. If this game is postponed or delayed, the market will remain open and close after the rescheduled game has finished (within two days). If the game is cancelled or rescheduled to over two days away, the market will resolve to a fair price in accordance with the rules.
PolymarketIn the upcoming MLB game between the St. Louis Cardinals and Cincinnati Reds, scheduled for May 22 at 6:40PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. This market will resolve to "Cincinnati Reds" if the Cincinnati Reds win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
ProphetXSports moneyline - resolves based on official game outcome per ProphetX Prediction Rules
Cincinnati Reds
38.1% avg
