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$134b

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400,720

Markets across

30,097

events

MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

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61%

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Houston Astros vs. Seattle Mariners
polymarket
predict
opinion

Who will win Houston Astros vs Seattle Mariners?

Volume:
$1,315,523

O/U 9.5

 - Polymarket

O/U 9.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 24, 2026

Closed: Sep 24, 1:47 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

O/U 9.5

View
100%
65%
Yes 100¢No 0¢
0.1¢
N/A
$40,572
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$33,780
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$14,472
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 10.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$7,287
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 8.5

View
100%
54%
Yes 100¢No 0¢
0.1¢
N/A
$5,688
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,503
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$642
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$122
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$51
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$30
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
predict

Houston Astros vs. Seattle Mariners

View
1%
44%
Yes 1¢No 99¢
—
$59,286
$53,045
N/A
N/A
N/A
Settled
No
polymarket

Houston Astros vs. Seattle Mariners

View
0%
44%
Yes 0¢No 100¢
—
N/A
$1,058,625
N/A
N/A
N/A
1d 8h 26m
Yes
opinion

Houston Astros vs Seattle Mariners

View
N/A
N/A
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Spread -1.5

View
0%
39%
Yes 0¢No 100¢
—
N/A
$49,200
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
33%
Yes 0¢No 100¢
—
N/A
$34,230
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 12.5

View
0%
Yes 0¢No 100¢
—
N/A
$4,641
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
29%
Yes 0¢No 100¢
—
N/A
$4,445
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
23%
Yes 0¢No 100¢
—
N/A
$4,439
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 11.5

View
0%
Yes 0¢No 100¢
—
N/A
$1,750
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
0%
46%
Yes 0¢No 100¢
—
N/A
$939
N/A
N/A
N/A
1d 8h 26m
No
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$30
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

View
0%
Yes 0¢No 100¢
—
N/A
$15
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$8
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
100%
2%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 25 of 35

Intro

This market tracks the over/under of 9.5 runs in the Houston Astros versus Seattle Mariners baseball game. Currently, the consensus probability that the total will be over/under 9.5 runs is 100.0%. This aggregation combines data from Polymarket, Predict, and Opinion, with resolution based on official final statistics from https://www.mlb.com/. Keep an eye on the game itself on September 23rd, as the outcome of this market will be determined by the final run total.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms utilize MLB.com as the primary resolution source and share identical logic for game completion, postponement, cancellation, and ties.Primary resolution logic: https://www.mlb.com/

Core resolution logic:

  • The winner of the game, as determined by MLB.com, will resolve the 'Houston Astros vs. Seattle Mariners' market.
  • A 'Yes' resolution for the 'run in the first inning' market requires at least one run scored in the first inning by either team, as determined by MLB.com.
  • Postponed games will remain open until completion.
  • Canceled games or ties will resolve 50-50.

Edge cases & clarifications:

  • Delayed Reporting: If MLB.com does not publish final statistics within 24 hours, a consensus of credible reporting will be used.
  • Game Completion: Extra innings are included in determining the winner and whether a run was scored in the first inning.
Timing: Resolution will occur immediately upon the official completion of the game and publication of final statistics on MLB.com, or within 24 hours if a consensus is required.Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for September 23 at 10:10PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. 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, or ends in a tie, this market will resolve 50-50. 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.

Predict

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for September 23 at 10:10PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. 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, or ends in a tie, this market will resolve 50-50. 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.

Opinion

In the upcoming MLB game, scheduled for 2026-09-23 01:40 UTC: If the Houston Astros win, the market will resolve to "Houston Astros". If the Seattle Mariners win, the market will resolve to "Seattle Mariners". The result will be determined based on the final score including any extra innings. 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, or officially ends in a tie, this market will resolve 50-50. Resolution Source: https://www.mlb.com/ Note: Opinion will resolve strictly based on the first officially published result from the designated source. Any subsequent revisions will not affect this resolution.

Frequently asked questions

On PredictionHero, this dashboard aggregates forecasts for the Astros-Mariners game from multiple prediction markets, including Polymarket and Predict. It provides a consensus view of the probabilities surrounding various outcomes related to the game. Currently, the total volume across all tracked platforms is $1,315,523, with $1,314,298 traded in the last 24 hours. This allows users to see how collective predictions are evolving and compare the odds offered on different platforms. The dashboard aims to give a comprehensive overview of expectations for this contest.

Prediction market odds often differ from traditional sportsbook odds due to the nature of how they are determined. Sportsbooks set lines based on statistical models and expert analysis, while this market relies on the collective wisdom of crowd predictions. This can lead to discrepancies, especially as new information emerges or public sentiment shifts. Prediction markets can sometimes offer more accurate probabilities, as they incentivize participants to reveal their true beliefs. However, sportsbooks may offer more competitive pricing due to their profit margins and risk management strategies.