Live prediction market odds for Boston Red Sox vs. St. Louis Cardinals (8:15 PM ET). Compare prices across Kalshi and Polymarket.
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Kalshi / Polymarket
2026-04-10
Boston Red Sox vs. St. Louis Cardinals (8:15 PM ET) — MLB game scheduled for 2026-04-10. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
St. Louis Cardinals leads the “Boston Red Sox vs. St. Louis Cardinals (8:15 PM ET)” event at 54.0% implied probability, followed by Boston Red Sox at 43.3%. A 17.5% cross-platform spread signals an active arbitrage window.
Boston Red Sox vs. St. Louis Cardinals (8:15 PM ET) is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). St. Louis Cardinals leads at 54% implied probability, making it the market favorite. Other contenders include Boston Red Sox at 43%.
St. Louis Cardinals currently leads at 54% implied probability. Behind St. Louis Cardinals, Boston Red Sox at 43% are the next closest contenders. The 17.5% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.
Here are the latest odds across Kalshi, Polymarket: St. Louis Cardinals: 60¢ on Kalshi, 48¢ on Polymarket. Boston Red Sox: 35¢ on Kalshi, 52¢ on Polymarket. The 17.5% 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 54¢ means the market estimates a 54% probability that St. Louis Cardinals will be the outcome. Buying one share at 54¢ pays out $1.00 if correct — a 85% 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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St. Louis Cardinals
54.0% avg
