Live prediction market odds for Seattle Mariners vs. Houston Astros (8:10 PM ET). Compare prices across Kalshi and Polymarket and ProphetX.
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Kalshi / Polymarket / ProphetX
2026-05-13
Seattle Mariners vs. Houston Astros (8:10 PM ET) — MLB game scheduled for 2026-05-13. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Seattle Mariners leads the “Seattle Mariners vs. Houston Astros (8:10 PM ET)” event at 57.6% implied probability, followed by Houston Astros at 43.5%. Platforms are tightly aligned at a 1.0% spread.
Seattle Mariners vs. Houston Astros (8:10 PM ET) is a prediction market event currently tracked across 3 platforms (Kalshi, Polymarket, ProphetX). Seattle Mariners leads at 58% implied probability, making it the market favorite. Other contenders include Houston Astros at 43%.
Seattle Mariners currently leads at 58% implied probability. Behind Seattle Mariners, Houston Astros at 43% are the next closest contenders. Platforms were tightly aligned at a 1.0% spread, suggesting broad consensus on the odds.
Here are the latest odds across Kalshi, Polymarket, ProphetX: Seattle Mariners: 58¢ on Kalshi, 57¢ on Polymarket, 58¢ on ProphetX. Houston Astros: 44¢ on Kalshi, 43¢ on Polymarket, 44¢ on ProphetX. Platforms are tightly aligned at a 1.0% spread, leaving little room for cross-platform arbitrage.
A price of 58¢ means the market estimates a 58% probability that Seattle Mariners will be the outcome. Buying one share at 58¢ pays out $1.00 if correct — a 72% 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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Seattle Mariners
57.6% avg
