How does the Over outcome win?

Over wins if the Mariners and Nationals score 10 or more combined runs by the end of the completed game.

How does the Under outcome win?

Under wins if the two teams combine for 9 or fewer total runs in the completed game.

When does this Mariners vs Nationals market resolve?

The market is scheduled to resolve after the June 12 game, listed for resolution around 10:45 PM ET, once the final score is known.

What happens if the Mariners vs Nationals game is postponed or canceled?

If the game is postponed, the market remains open until the game is completed. If it is canceled with no make-up game, the market resolves 50-50.

Part of: Seattle Mariners vs. Washington Nationals

Seattle Mariners vs. Washington Nationals: O/U 9.5

Q: What is the Mariners vs Nationals O/U 9.5 prediction market?

This market lets traders predict whether the Seattle Mariners and Washington Nationals will combine for over or under 9.5 total runs in their June 12 MLB game.

This Polymarket MLB total market covers whether the Seattle Mariners and Washington Nationals will combine for 10 or more runs on June 12. It resolves to Over if the final score totals at least 10 runs, and Under if the total is 9 or fewer; current tracked smart money totals $21,404 across 1 signal.

In the upcoming MLB game between the Seattle Mariners and Washington Nationals, scheduled for June 12 at 6:45 PM ET: This market will resolve to "Over" if the Seattle Mariners and Washington Nationals combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

5 smart money signals detected, totaling $74,703.

Categories: Sports, Games, MLB, baseball

Notable Trades

83% winner buying Under

Sharp MLB bettor with an 83% record and $432k profit is making a large $31.7k Under bet at near-even odds.

This bettor wins 83% of resolved trades and is up $432k lifetime.
They put $31.7k on Under at 51¢, a large near-even bet on a liquid MLB total.
This wallet has traded across 42 events with nearly $981k in tracked cross-market volume.

$21,404 on Under | Wallet win rate: 83%

94% win-rate sports sharp

Surfacing because a highly profitable 94% lifetime bettor is buying Under despite this being a liquid MLB market.

This bettor wins 94% of resolved trades and is up $295k lifetime.
They have traded across 208 events with the same 94% hit rate, suggesting a repeatable sports edge.
Entry at 51¢ on Under implies a near-even price for a bettor with a very strong track record.

$2,108 on Under | Wallet win rate: 94%

83% winner buying Under

Sharp MLB bettor with an 83% record and $432k profit is making a large $31.7k Under bet at near-even odds.

This bettor wins 83% of resolved trades and is up $432k lifetime.
They put $31.7k on Under at 51¢, a large near-even bet on a liquid MLB total.
This wallet has traded across 42 events with nearly $981k in tracked cross-market volume.

$31,710 on Under | Wallet win rate: 83%

93% winner buying MLB over

Sharp sports bettor with a 93% resolved win rate and strong lifetime profit bought $4.0k of Over 9.5 at 47¢.

This bettor has won 42 of 45 resolved trades and is up $57.7k lifetime.
They bought $4.0k of Over at 47¢, implying a near-even MLB total they think is mispriced.
Their past wins came around 52¢ average odds, so the track record is not just from betting heavy favorites.

$4,031 on Over | Wallet win rate: 93%

Profitable sports whale buying Under

A highly profitable, high-volume sports bettor bought $15.5k of Under alongside linked-wallet flow and a sharp pre-game volume spike.

This high-volume bettor is up $1.3M across more than 13,000 resolved bets.
They bought $15.5k of Under in four rapid fills at 53¢ before first pitch.
Two linked wallets have put $17.2k on the same side while pre-game volume spiked.

$15,450 on Under | Wallet win rate: 53%