TOTAL VOLUME:

$134.2b

24H VOL:

$126,590,312

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,439,516,703

404,175

Markets across

30,277

events

MATCHED EVENTS:

2,685

PLATFORM COVERAGE:

5

Polymarket:

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VS.

Kalshi:

61%

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Houston Astros vs. Athletics
kalshi
polymarket

Who will win Houston Astros vs Athletics?

Volume:
$512,370

Houston Astros vs. Athletics

 - Polymarket

Houston Astros vs. Athletics - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 27, 2026

Closed: Sep 27, 7:33 PM EST

polymarket

Polymarket

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

Houston Astros vs. Athletics

View
100%
45%
Yes 100¢No 0¢
0.1¢
N/A
$369,743
N/A
N/A
N/A
4d 17h 59m
Yes
polymarket

Spread -1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$44,996
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$8,892
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -7.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$2,710
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$2,384
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$922
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$505
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$272
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$60
N/A
N/A
N/A
Settled
Yes
polymarket

Houston Astros O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$35
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$21
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
$21
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

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

O/U 9.5

View
0%
Yes 0¢No 100¢
—
N/A
$38,277
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 11.5

View
0%
Yes 0¢No 100¢
—
N/A
$17,153
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$11,661
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$6,087
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

View
0%
Yes 0¢No 100¢
—
N/A
$4,220
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$2,531
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
0%
61%
Yes 0¢No 100¢
—
N/A
$828
N/A
N/A
N/A
4d 17h 59m
No
polymarket

O/U 12.5

View
0%
Yes 0¢No 100¢
—
N/A
$575
N/A
N/A
N/A
Settled
Yes
kalshi

Game goes to extra innings

View
0%
Yes 0¢No 100¢
100¢
N/A
$388
N/A
N/A
$388
Settled
No
polymarket

Extra Innings

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

1st 5 Innings O/U 4.5

View
0%
Yes 0¢No 100¢
—
N/A
$35
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
0%
Yes 0¢No 100¢
—
N/A
$35
N/A
N/A
N/A
Settled
Yes
Total markets: 25 of 38

Description

This group covers predictions related to a single MLB game between the Houston Astros and the Oakland Athletics on September 27th. Markets include the game winner, whether a run will be scored in the first inning, and if the game goes into extra innings.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: The markets from Polymarket and Kalshi cover different aspects of the same game, leading to a scope divergence.Hero tip: Treat each market as independent. Outcomes in one market do not necessarily influence others.

Critical divergence points:

  • Polymarket: Polymarket offers markets on the game winner and first inning run scoring, resolving based on official MLB statistics. A canceled or tied game resolves 50-50. "This market will resolve to "Houston Astros" if the Houston Astros win the game."
  • Kalshi: Kalshi focuses solely on whether the game goes to extra innings, resolving based on whether at least one extra inning is played. "If at least 1 extra inning is played in the Houston vs A's professional baseball game originally scheduled for Sep 27, 2026 at 3:05 PM EDT, then the market resolves to Yes."
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 Athletics, scheduled for September 27 at 3:05PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Athletics" if the Athletics 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 at least 1 extra inning is played in the Houston vs A's professional baseball game originally scheduled for Sep 27, 2026 at 3:05 PM EDT, then the market resolves to Yes.

Frequently asked questions

Prediction market odds, like those found on Polymarket and Kalshi, often reflect the wisdom of the crowd, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set initial lines based on statistical models and expert analysis, while prediction markets allow anyone to trade on their beliefs, leading to dynamic price adjustments based on new information and collective sentiment. This market’s implied probabilities can diverge from sportsbook odds due to differing information access, biases, or simply a larger and more diverse pool of participants. Comparing these odds can provide a more comprehensive view of the likely outcome of the Astros-Athletics game.