TOTAL VOLUME:

$134.2b

24H VOL:

$134,145,987

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

Markets across

30,383

events

MATCHED EVENTS:

2,688

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
Kansas City Royals vs. Houston Astros
polymarket
predict

Who will win Kansas City Royals vs Houston Astros?

Volume:
$558,640

Kansas City Royals vs. Houston Astros

all

2 markets

Polymarket

Predict

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 17, 2026

Closed: Sep 17, 12:11 AM EST

polymarket

Polymarket

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

Kansas City Royals vs. Houston Astros

View
100%
56%
Yes 100¢No 0¢
0.1¢
N/A
$483,741
N/A
N/A
N/A
Settled
Yes
predict

Kansas City Royals vs. Houston Astros

View
1%
Yes 1¢No 99¢
—
$79,834
$17,465
N/A
N/A
N/A
Settled
No
polymarket

O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$11,116
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$8,488
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$7,042
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$5,337
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$280
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
100%
71%
Yes 100¢No 0¢
0.1¢
N/A
$241
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 3.5

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

O/U 8.5

View
0%
53%
Yes 0¢No 100¢
—
N/A
$9,097
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$8,393
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 9.5

View
0%
Yes 0¢No 100¢
—
N/A
$2,788
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 10.5

View
0%
36%
Yes 0¢No 100¢
—
N/A
$2,070
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
0%
50%
Yes 0¢No 100¢
—
N/A
$1,057
N/A
N/A
N/A
Settled
No
polymarket

Spread -2.5

View
0%
29%
Yes 0¢No 100¢
—
N/A
$600
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

View
0%
Yes 0¢No 100¢
—
N/A
$300
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
0%
64%
Yes 0¢No 100¢
—
N/A
$270
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
0%
84%
Yes 0¢No 100¢
—
N/A
$240
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -4.5

View
0%
Yes 0¢No 100¢
—
N/A
$61
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -3.5

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

1st 5 Innings O/U 4.5

View
0%
55%
Yes 0¢No 100¢
—
N/A
$16
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

View
0%
42%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
33%
Yes 0¢No 100¢
—
N/A
N/A
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
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
0%
51%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
Total markets: 25

Intro

This market tracks whether a run will be scored in the first inning of a Kansas City Royals versus Houston Astros baseball game. Currently, the consensus probability of a run being scored in the first inning is 10.0%. This aggregate reflects predictions from Polymarket and Predict, and will resolve based on Official MLB statistics (MLB.com). The markets consistently resolve to the winning team of the game, with a 50-50 split for ties or cancellations, and will remain open until the game is completed. Keep an eye on the scheduled game time of September 24, 2026, as this marks the end of the betting period and the start of resolution.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Both platforms present identical resolution criteria regarding the winning team, tie/cancellation handling, and postponement procedures.Primary resolution logic: Official MLB statistics (MLB.com)

Core resolution logic:

  • The market resolves to 'Kansas City Royals' if the Royals win the game.
  • The market resolves to 'Houston Astros' if the Astros win the game.
  • If the game ends in a tie or is canceled without a make-up game, the market resolves 50-50.

Edge cases & clarifications:

  • Postponement: If the game is postponed, the market remains open until the game is completed.
  • Data Delay: If official statistics are not published within 24 hours, a consensus of credible reporting will be used.
Timing: Resolution will occur after the official completion of the game, with a maximum delay of 24 hours for official statistics publication.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 Kansas City Royals and Houston Astros, scheduled for September 16 at 8:10PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals 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.

Predict

In the upcoming MLB game between the Kansas City Royals and Houston Astros, scheduled for September 15 at 8:10PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals 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.

Frequently asked questions

On both Polymarket and Predict, this dashboard tracks the consensus view of whether various outcomes will occur in the Royals-Astros game. Currently, the combined volume across these platforms is $558,640, with $541,374 traded in the last 24 hours. This allows users to see where the crowd believes the probabilities lie for different aspects of the game, aggregating data from multiple prediction markets into a single, easy-to-understand interface. The dashboard provides a comprehensive overview of the market for the Royals-Astros game, offering insights into the collective wisdom of prediction market participants.

Prediction market odds often reflect a different kind of information than sportsbook odds. Sportsbooks set lines to balance betting action and incorporate a profit margin, while prediction markets are driven by individuals wagering their own capital based on their beliefs. This can lead to discrepancies, particularly when public sentiment strongly diverges from expert analysis. While sportsbooks may initially favor one team, this market could shift if a significant number of informed traders believe the other team has a higher probability of winning. Both offer valuable insights, but represent different approaches to forecasting the outcome of the Royals-Astros game.

Several factors could significantly impact this market before the game concludes. Any news regarding key player injuries, changes in the starting pitchers, or even weather forecasts could shift the implied probabilities. Unexpected announcements about team strategies or player performance could also influence trading activity. A strong performance by either team in preceding games might also affect sentiment. Monitoring these signals and how traders react to them will be crucial for understanding the dynamics of this market as it approaches its resolution date.