Seattle Mariners vs. Cleveland Guardians
8 signals across 3 markets · $26,469 tracked · resolves Jul 4, 2026
Seattle Mariners vs. Cleveland Guardians is an MLB prediction market centered on the game total, with traders pricing whether the matchup finishes over or under 7.5 runs. PolySpotter has tracked $4,500 in smart money activity across 2 signals, including alerts tied to profitable serial and sports bettors.

Markets (3)
Top trades across all markets
- 88% winner buying Under
Sharp sports bettor with an 88% resolved win rate and strong cross-market track record is buying Under 8.5 in the Mariners-Guardians game.
$1,385Wallet win rate: 78%Score: 8.0 - 86% winner on totals
Sharp serial sports bettor with an 86% resolved win rate and +$127k lifetime P&L bought Under 8.5 at 61¢.
$1,200Wallet win rate: 86%Score: 6.0 - Profitable sports whale
A massively profitable serial sports trader bought the Seattle underdog, though the position has moved against them from 26¢ to 16¢.
$2,301Wallet win rate: 63%Score: 5.6 - Pre-game Mariners whale
A single $11.6k Mariners buy drove a huge pre-game volume spike on a previously quiet MLB market, though the wallet’s track record is mixed.
$11,600Wallet win rate: 72%Score: 5.4 - Profitable serial bettor
Profitable high-volume cross-market bettor with a 60% resolved win rate and nearly $500k lifetime profit bought Under at even money.
$2,500Wallet win rate: 61%Score: 4.0 - Profitable serial bettor
Profitable high-volume cross-market bettor with a 60% resolved win rate and nearly $500k lifetime profit bought Under at even money.
$1,000Wallet win rate: 61%Score: 4.0 - Profitable sports whale
A massively profitable serial sports trader bought the Seattle underdog, though the position has moved against them from 26¢ to 16¢.
$2,982Wallet win rate: 63%Score: 3.0 - Profitable serial sports bettor
Profitable high-volume serial sports trader with a large Under position despite only moderate signal score.
$3,500Wallet win rate: 61%Score: 1.0
Top wallets in this event
- 0x8201c7…8a41$11,600 · 1 market · 1 alert · 72% wins
- 0x9770ca…0ff5$7,000 · 1 market · 3 alerts · 61% wins
- 0xfe787d…0319$5,283 · 1 market · 2 alerts · 63% wins
- 0x595df4…9ad0$1,385 · 1 market · 1 alert · 78% wins
- 0xcba5b5…cd88$1,200 · 1 market · 1 alert · 86% wins
FAQs
What are the Mariners vs Guardians prediction market odds?
This event tracks Polymarket odds for Seattle Mariners vs. Cleveland Guardians, including the over/under 7.5 runs market. Odds can move as traders react to lineups, pitching news, injuries, weather, and betting activity.
What outcome is being traded for Mariners vs Guardians?
The listed child market is the game total: whether Seattle Mariners vs. Cleveland Guardians finishes over or under 7.5 runs. The event hub aggregates activity around that market rather than focusing only on a single bettor or trade.
Is smart money betting on Mariners vs Guardians?
PolySpotter has flagged $4,500 in smart money activity across 2 signals for this event, including alerts from a profitable serial bettor and a profitable serial sports bettor. These signals can help show where experienced traders are taking positions.
When does the Mariners vs Guardians market resolve?
The market is tied to the scheduled MLB game on June 27 at 7:10 PM ET. If the game is postponed, it remains open until the game is completed; if it is canceled with no make-up game or ends in a tie, it resolves 50-50.