Seattle Mariners vs. Washington Nationals
22 signals across 6 markets · $222,796 tracked · resolves Jun 19, 2026
This Seattle Mariners vs. Washington Nationals event tracks Polymarket odds for the MLB matchup scheduled for June 12 at 6:45 PM ET. Traders are pricing the game winner across the available outcomes, with PolySpotter currently tracking $13,205 in smart money and one notable signal from a 94% win-rate sports sharp.

Markets (6)
- Seattle Mariners vs. Washington Nationals: O/U 9.59 signals · $139,207 tracked
- Seattle Mariners vs. Washington Nationals8 signals · $75,704 tracked
- Seattle Mariners vs. Washington Nationals: O/U 8.52 signals · $3,826 tracked
- Spread: Seattle Mariners (-1.5)1 signal · $1,585 tracked
- Seattle Mariners vs. Washington Nationals: O/U 6.51 signal · $1,448 tracked
- Seattle Mariners vs. Washington Nationals: O/U 11.51 signal · $1,025 tracked
Top trades across all markets
- 90% winner buying Over
Elite profitable sports bettor with a 90% record and $2.0M lifetime profit bought Over 9.5 shortly before the MLB market close.
$7,200Wallet win rate: 91%Score: 10.2 - Elite 84% sports bettor
Elite sports wallet with 84% win rate and $4.8M profit made a $14.9k buy on Under, backed by a long serial cross-market track record.
$14,911Wallet win rate: 93%Score: 9.0 - 96% winner backs underdog spread
Elite sports bettor with a 96% resolved record and $1.22M profit is buying Washington Nationals +1.5 at 54¢.
$1,585Wallet win rate: 95%Score: 9.0 - 84% winner betting Under
Elite sports bettor with an 84% historical win rate and $4.8M profit bought $40.7K of Under in a liquid MLB total market amid a volume spike.
$40,700Wallet win rate: 93%Score: 9.0 - New whale backing Mariners
A 2-day-old repeat whale bought $34.8k of Mariners at 58¢ amid an unusually large pre-game volume spike, suggesting fresh informed conviction despite limited resolved history.
$34,764Wallet win rate: 90%Score: 8.8 - 94% win-rate sports sharp
Elite 94% lifetime winner with $1.56M profit is taking a $13.2K position on Washington in an MLB market.
$13,205Wallet win rate: 93%Score: 8.6 - Profitable serial sports bettor
Surface this because a highly profitable serial sports bettor with a 76% long-term win record bought Over at 48¢.
$1,694Wallet win rate: 69%Score: 8.2 - 91% winner on MLB total
Sharp bettor with a 91% win rate and $311k lifetime profit is buying Over at 56¢ on an MLB total.
$2,800Wallet win rate: 92%Score: 8.0 - Elite MLB totals sharp
Elite proven wallet with 1087 wins in 1090 resolved positions and +$135,942 lifetime P&L is buying Over in this MLB total.
$1,026Wallet win rate: 100%Score: 8.0 - 94% win-rate sports sharp
Surfacing because a highly profitable 94% lifetime bettor is buying Under despite this being a liquid MLB market.
$2,108Wallet win rate: 95%Score: 8.0
Top wallets in this event
- 0x4bff30…fc26$55,610 · 1 market · 2 alerts · 93% wins
- 0x09b540…7e72$53,114 · 1 market · 2 alerts · 57% wins
- 0x408fe7…b2f4$34,764 · 1 market · 1 alert · 90% wins
- 0x526852…135d$15,450 · 1 market · 1 alert · 54% wins
- 0x65c18d…2988$15,361 · 1 market · 1 alert · 82% wins
- 0x16bb99…8492$13,205 · 1 market · 1 alert · 93% wins
- 0x9c76cd…c926$7,200 · 1 market · 1 alert · 91% wins
- 0x9c3ce0…e8c9$4,031 · 1 market · 1 alert · 95% wins
- 0xf1528f…64aa$3,875 · 1 market · 1 alert · 63% wins
- 0xae825b…faf0$2,800 · 1 market · 1 alert · 92% wins
FAQs
What are the Mariners vs. Nationals prediction market odds?
The event shows live Polymarket pricing for the Seattle Mariners vs. Washington Nationals game winner. Prices move as traders react to lineups, pitching news, injuries, and smart money activity.
What is the smart money doing on Mariners vs. Nationals?
PolySpotter has tracked $13,205 in smart money across this event, including one recent signal tied to a 94% win-rate sports sharp. That signal can help highlight where sharper traders may be leaning.
Can I track Mariners vs. Nationals on Polymarket?
Yes. This event hub follows the Polymarket market for Seattle Mariners vs. Washington Nationals, including the outcome prices and smart money alerts connected to the game.
When does the Mariners vs. Nationals market resolve?
The market is designed to resolve after the game is completed. If the game is postponed, it remains open until the matchup is played; if it is canceled with no makeup or ends in a tie, it resolves 50-50.