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Sports · Polymarket

Seattle Mariners vs. Boston Red Sox: O/U 8.5

Trade on Polymarket →
30.50%
10 PM11 PMSeptember01 AM02 AM03 AM04 AM05 AM06 AM07 AM08 AM09 AM10 AM11 AM12 PM01 PM3035404550%30.50%

Stats

24h Volume
$214.0K

Live Order Book Depth

Spread
1.0¢ (3.3%)
Mid Price
30.5¢
Total Depth
$63,812
Bid/Ask Imbalance
27% bid
Bids (Buy)
30.0¢17,698
29.0¢7,367
28.0¢9,635
27.0¢12,632
26.0¢8,411
25.0¢801
21.0¢400
20.0¢1,233
Asks (Sell)
31.0¢2,558
32.0¢21,889
33.0¢8,749
34.0¢15,123
35.0¢15,829
36.0¢808
37.0¢150
41.0¢1,635
Estimated Slippage to Buy "Yes"
walking the real book
$100 order
31.00¢0.00%
avg fill · slippage
$1,000 order
31.20¢+0.65%
avg fill · slippage
$10,000 order
32.13¢+3.65%
avg fill · slippage

Compare Across Platforms

Not listed on another platform we track — but this looks like it might be the same real-world bet (unconfirmed):

ManifoldMLB: Will the Boston Red Sox sweep the Los Angeles Angels OR will the 3-game series total 28 or more runs?
49.00%
Same bet?

Frequently Asked Questions

What is the current probability for "Seattle Mariners vs. Boston Red Sox: O/U 8.5"?

As of the latest update, Polymarket prices this at 30.50%, based on $214.0K in tracked 24h trading volume.

When does this market close?

This contract is scheduled to resolve on or around September 1, 2026, per Polymarket's listed close time.

Where can I trade this market?

This contract trades live on Polymarket. You can view the live order book and trade it directly at the source link on this page.

Is this market listed on other prediction platforms?

Not currently listed on another platform PredictRankd tracks (Kalshi, Manifold, PredictIt, Limitless, Smarkets, Futuur), or no confidently-verified match was found.