TOTAL VOLUME:

$134.1b

24H VOL:

$113,466,932

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,423,222,590

402,751

Markets across

30,217

events

MATCHED EVENTS:

2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Athletics vs. Houston Astros
polymarket
kalshi
opinion

Who will win Athletics vs Houston Astros?

Volume:
$498,818

Spread -1.5

 - Polymarket

Spread -1.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 22, 2026

Closed: Aug 21, 11:22 PM EST

polymarket

Polymarket

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

Spread -1.5

View
100%
54%
Yes 100¢No 0¢
0.1¢
N/A
$10,938
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
100%
66%
Yes 100¢No 0¢
0.1¢
N/A
$8,660
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$4,649
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
100%
24%
Yes 100¢No 0¢
0.1¢
N/A
$182
N/A
N/A
N/A
Settled
Yes
kalshi

Yes

View
0%
Yes 0¢No 100¢
100¢
N/A
$146,897
N/A
N/A
$116,345
Settled
No
polymarket

O/U 8.5

View
0%
47%
Yes 0¢No 100¢
—
N/A
$126,750
N/A
N/A
N/A
Settled
Yes
polymarket

Athletics vs. Houston Astros

View
0%
36%
Yes 0¢No 100¢
—
N/A
$110,981
N/A
N/A
N/A
Settled
Yes
opinion

Athletics vs Houston Astros

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

O/U 7.5

View
0%
56%
Yes 0¢No 100¢
—
N/A
$36,851
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

View
0%
Yes 0¢No 100¢
—
N/A
$27,666
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 9.5

View
0%
37%
Yes 0¢No 100¢
—
N/A
$13,215
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
0%
48%
Yes 0¢No 100¢
—
N/A
$4,998
N/A
N/A
N/A
Settled
No
polymarket

O/U 4.5

View
0%
Yes 0¢No 100¢
—
N/A
$3,394
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
25%
Yes 0¢No 100¢
—
N/A
$1,677
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 6.5

View
0%
Yes 0¢No 100¢
—
N/A
$1,225
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
18%
Yes 0¢No 100¢
—
N/A
$566
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
0%
62%
Yes 0¢No 100¢
—
N/A
$84
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

View
0%
49%
Yes 0¢No 100¢
—
N/A
$30
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

View
0%
37%
Yes 0¢No 100¢
—
N/A
$20
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
0%
28%
Yes 0¢No 100¢
—
N/A
$15
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
0%
9%
Yes 0¢No 100¢
—
N/A
$15
N/A
N/A
N/A
Settled
No
polymarket

Spread -4.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
24%
Yes 0¢No 100¢
—
N/A
$1
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
100%
64%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 24

Description

This event group covers two MLB baseball markets for the game between the Athletics and Houston Astros scheduled for August 21, 2026. The first market determines the winner of the game, while the second market determines whether any runs are scored in the first inning.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms use the same core resolution logic based on official MLB statistics or credible reporting consensus, with identical handling of postponements, cancellations, and ties.Primary resolution logic: Official MLB statistics or consensus of credible reporting

Core resolution logic:

  • Markets resolve based on official final game statistics from MLB
  • If official stats are unavailable within 24 hours, credible reporting consensus is used
  • Postponed games remain open until completed
  • Canceled games or ties resolve 50-50

Edge cases & clarifications:

  • Postponement: Market remains open until game is completed; resolution source remains unchanged
  • Cancellation: Market resolves 50-50 if game is canceled with no makeup date
  • Tie: Market resolves 50-50 if game officially ends in a tie
Timing: Resolution occurs when official MLB statistics are published, or within 24 hours of game conclusion if stats are delayedOur 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 Athletics and Houston Astros, scheduled for August 21 at 8:10PM ET: This market will resolve to "Athletics" if the Athletics win the game. This market will resolve to "Houston Astros" if the Houston Astros 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.

Kalshi

If either team scores a run in the first inning of the A's vs Houston professional baseball game originally scheduled for Aug 22, 2026 at 7:10 PM EDT, then the market resolves to Yes.

Opinion

In the upcoming MLB game, scheduled for 2026-08-23 18:10 UTC: If the Athletics win, the market will resolve to "Athletics". If the Houston Astros win, the market will resolve to "Houston Astros". 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

The dashboard for the Athletics vs. Astros matchup market aggregates real-time data from multiple venues, showing how traders price this market across platforms. It displays total volume of $498,818 and 24-hour volume of $481,567, letting you see where consensus forms and spot divergence. The view updates continuously, reflecting how Polymarket and Opinion users evaluate the odds as the game approaches.

Injuries, weather delays, lineup changes, and pitching announcements often shift this market close to game time. Key starters being scratched or rain forecasts can cause rapid re-pricing, especially on platforms with lighter liquidity. Traders watch official team reports and live stadium updates to anticipate moves in the odds before the final resolution.